| Mechanisms of Dynamic Deformation and Dynamic Failure in Aluminum Nitride |
Jun 2012 |
20 pages |
| Authors:
Guangli Hu; C Q Chen; K T Ramesh; J W McCauley; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
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 | Uniaxial quasi-static, uniaxial dynamic and confined dynamic compression experiments have been performed to characterize the failure and deformation mechanisms of a sintered polycrystalline aluminum nitride using a servohydraulic machine and a modified Kolsky bar. Scanning electron microscopy and transmission electron microscopy (TEM) are used to identify the fracture and deformation mechanisms under high rate and high pressure loading conditions. These results show that the fracture mechanisms are strong functions of ... |
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| The Compressive Failure of Aluminum Nitride Considered as a Model Advanced Ceramic |
Jun 2012 |
27 pages |
| Authors:
Guangli Hu; K T Ramesh; Buyang Cao; J W McCauley; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
|
| Uniaxial quasi-static compression, uniaxial dynamic compression and confined dynamic compression experiments were performed to characterize the failure of Aluminum Nitride (AlN) using a servo hydraulic machine and a modified Kolsky bar set-up respectively. High-speed digital cameras are used to visualize the failure processes. A summary of the available experimental results, including that in the literature, shows that the compressive strength of the AlN is sensitive to strain rate in the ... |
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| Computational Study of the Effect of Slot Orientation on Synthetic Jet-Based Separation Control |
Jan 2012 |
25 pages |
| Authors:
Shawn Aram; Rajat Mittal; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
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| A computational study is conducted to explore the effect of synthetic jet orientation on boundary layer separation control. A six-to-one aspect-ratio rectangular slot is chosen in the current study and streamwise and spanwise orientations of this slot are analyzed. In the first part of this study, the interaction of the jet with an attached laminar boundary layer for both slot configurations is examined. The dominant feature in the streamwise oriented ... |
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| Experimental Evaluation of the Atmospheric Energy Input to Sea Surface Waves |
30 Sep 2011 |
10 pages |
| Authors:
Tihomir Hristov; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
|
| Understanding the spatio-temporal structure and the dynamic influence of the surface waves signature in the wind is critical for the transition from the current empirical and phenomenological (dating back to Charnock (1956)), to a mechanistic description of air-sea interaction. Over the last decades, however, a number of observational studies attempting to detect statistical and dynamic manifestations of wave signature in the airflow have produced negative results. Weiler and Burling (1967) ... |
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| Meteorological and Wave Measurements from a Stable Research Platform at Sea |
30 Sep 2010 |
9 pages |
| Authors:
Tihomir Hristov; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
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| The approach that describes air-sea exchange as interaction between a flow and a rough surface, now considered traditional, dates back to the 1950s (Charnock, 1956). Within that approach, the complex exchange processes are condensed down to exchange coefficients, thus delivering computational efficiency in large-scale numerical modeling of air-sea meteorology. However, inability to distinguish between momentum and kinetic energy transferred to waves from those transferred to currents, as well as considerable ... |
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| Meteorological and Wave Measurements from a Stable Research Platform at Sea |
Jan 2009 |
7 pages |
| Authors:
Tihomir Hristov; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
|
| The approach that describes air-sea exchange as interaction between a flow and a rough surface, now considered traditional, dates back to the 1950s (Charnock, 1956). Within that approach, the complex exchange processes are condensed down to exchange coefficients, thus delivering computational efficiency in large-scale numerical modeling of air-sea meteorology. However, inability to distinguish between momentum and kinetic energy transferred to waves from those transferred to currents, as well as considerable ... |
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| Wave-Driven Marine Boundary Layers: Implications for Atmospheric Electromagnetics and Ocean Acoustics |
30 Sep 2008 |
9 pages |
| Authors:
Tihomir Hristov; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
|
| The description of electromagnetic propagation through the marine atmospheric boundary layer is considerably more complex than through the terrestrial boundary layer. Contributing to the complexity are refractive ducts as well as the moving wave-roughened sea surface. A significant issue for propagation in marine environment is the reproducible tendency of models to overestimate the signal's intensity at the receiver (Barrios and Patterson (2002)). Such discrepancy, in turn, leads to a uncertainty ... |
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| Direct Measurements of Reynolds Stresses and Turbulence in the Bottom Boundary Layer |
30 Sep 2008 |
7 pages |
| Authors:
Joseph Katz; Thomas R Osborn; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
|
| a) Measure the Reynolds stresses, velocity profile, vorticity, dissipation, and turbulent spectra in the bottom boundary layer of the coastal ocean using particle imaging velocimetry (PIV). The validity of these direct stress measurements is independent of assumptions about the boundary layer structure, turbulent spectra and balance of production and dissipation. b) Quantify the temporal variation of turbulent stresses in relation to the oceanographic parameters that represent the local environment, such ... |
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| Meteorological and Wave Measurements from a Stable Research Platform at Sea |
30 Sep 2008 |
4 pages |
| Authors:
Tihomir Hristov; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
|
| The development of short-term wave forecasting capability, a stated goal of the High-Resolution Wave-Air-Sea Interaction project, requires observational information that will both serve to improve the understanding of the underlying physics and will be used to test the predictive potential of wave propagation models. For a stochastic and nonlinear environment such as the air-sea interface, a considerable uncertainty still exists regarding the mechanisms of energy and momentum exchange as well ... |
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| Wave-Driven Marine Boundary Layers: Implications for Atmospheric Electromagnetics and Ocean Acoustics |
30 SEP 2007 |
8 pages |
| Authors:
Tihomir Hristov; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
|
| The long-term goal of this effort is to advance our quantitative understanding of the factors affecting signal propagation in the marine environment, essential for radio tracking, communication and guidance applications. A significant issue in this scientific area is the reproducible tendency of models for propagation to overestimate the signal's intensity at the receiver (Barrios and Patterson (2002)). Currently employed algorithms rely on the return signal's intensity for determining the distance ... |
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| Turbulence and Complex Flow Phenomena in Multi-Stage Axial Turbomachines |
10 MAY 2007 |
35 pages |
| Authors:
Joseph Katz; Charles Meneveau; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
|
| The objective of this project is to measure the flow within axial turbomachines and use the data to address turbulence modeling issues. Measurements are performed in two-stage transparent machines located in an optically index matched facility, which allows unobstructed 2-D and Stereo PIV measurements. Data provide insight on blade-wake, wake- boundary layer and wake-wake interactions. This report examines and elucidates several phenomena: i. Variations in turbulence within a wake generated ... |
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| The Cohesive Element Approach to Dynamic Fragmentation: The Question of Energy Convergence |
FEB 2007 |
32 pages |
| Authors:
J. F. Molinari; G. Gazonas; R. Raghupathy; A. Rusinek; F. Zhou; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
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| The cohesive element approach is getting increasingly popular for simulations in which a large amount of cracking occurs. Naturally, a robust representation of fragmentation mechanics is contingent to an accurate description of dissipative mechanisms in form of cracking and branching. A number of cohesive law models have been proposed over the years and these can be divided into two categories: cohesive laws that are initially rigid and cohesive laws that ... |
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| The Design of Accurate Micro-Compression Experiments |
2006 |
12 pages |
| Authors:
Haitao Zhang; Brian E. Schuster; Qiuming Wei; Kaliat T. Ramesh; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
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| We investigate (via finite-element analyses) the factors that may affect the accuracy of micro-compression measurements. Based on these simulations, we suggest guidelines for the development of accurate micro-compression experiments in terms of fillet to post radius ratio, post aspect ratio, post taper, and system alignment. |
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| Characterization of Dislocation Core Structures in BCC Metals |
30 AUG 2004 |
17 pages |
| Authors:
Kevin J. Hemker; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
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| The scientific aim of this study was to use state-of-the-art TEM techniques to experimentally describe dislocation core structures in bcc metals through experimental characterization of screw dislocations in single-crystalline Mo. Methods were developed for deriving localized electron structure data from electron energy loss spectra (EELS) taken from perfect lattice regions and along dislocations and low angle boundaries in ordered NiAl. Significant changes in the fine structure of the NiL edge ... |
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| Turbulence and Complex Flow Phenomena in Axial Turbomachines |
18 JUN 2004 |
37 pages |
| Authors:
Joseph Katz; Charles Meneveau; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
|
| The objective of this project is to measure the unsteady flow in axial turbomachines and use the data to address turbulence and complex flow modeling issues. The measurements are performed in an optically index matched facility, which allows unobstructed 2-D and Stereo PIV measurements within an entire stage. The data provide unprecedented insight on blade blade, blade-wake, wake-boundary layer and wake-wake interactions in the hub, mid-span and tip regions. Turbulence ... |
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| The Mechanical Response of an A359/SiCp MMC and the A359 Aluminum Matrix to Dynamic Shearing Deformations |
17 APR 2004 |
10 pages |
| Authors:
Yulong Li; K. T. Ramesh; E. S. Chin; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
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| The mechanical response of a metal matrix composite to dynamic shearing deformations has been measured, using a new design of the thin-walled tubular specimen for the torsional Kolsky bar experiment that allows working with these difficult-to-machine materials. The advantages of using the new specimen design are as follows: (i) the thickness of the thin wall along the axial direction is very uniform; (ii) specimen machining is extremely simple; (iii) the ... |
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| Thermo-Fluid Mechanic Study of Thermoacoustic Devices |
15 JUN 2002 |
102 pages |
| Authors:
Andrea Prosperetti; Cila Herman; Omar Knio; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
|
| The research described is articulated in three parts: a) Development and study of a quasi-one-dimensional, time-domain, non-linear, simplified model of a thermoacoustic device. b) Multidimensional numerical modeling based on low- Mach-number asymptotics. c) Visualization of high-speed oscillating temperature fields in a thermoacoustic stack by means of holographic interferometry combined with high-speed cinematography. |
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| Experimental Determination of Dislocation Core Structures by HRTEM |
JUL 2001 |
8 pages |
| Authors:
Kevin J. Hemker; Mingwei Chen; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
|
| The overarching scientific goal of this study is to use state-of-the- art TEM techniques to experimentally characterize dislocation core structures in metals and alloys at the atomic scale. The past year has involved the culmination of efforts on intermetallic alloys and pure fcc metals and the development of new techniques for the study of bcc metals and alloys. Our work on (Ni, Fe)3 Ge indicated that changes in mechanical behavior ... |
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| Instrumentation to Support PIV and HPIV Measurements in an Axial Turbomachine Flow Visualization Facility |
09 JUN 2001 |
24 pages |
| Authors:
Joseph Katz; Charles Meneveau; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
|
| This DURIP grant has provided instrumentation that supports an AFOSR sponsored program. The objective of this program is to measure the unsteady flow in axial turbomachines and use the data to address turbulence and flow modeling issues that are specific to such complex environments. The motivation is to examine turbulence and unsteady flow phenomena at three levels of modeling: passage-averaged, steady RANS, unsteady RANS, and subgrid scale stress modeling for ... |
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| Penetrator/Target Interactions: An Interfacial Layer Approach |
24 APR 2001 |
6 pages |
| Authors:
Gang Bao; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
|
| Under the support of ARO (Grant number: DAAG55-98-1-0133, Engineering Sciences Division), a three-year basic research program is carried out on the micromechanics of penetrator/target interactions. Emphasis is placed on the basic models for penetrators and targets in the interfacial zone, aiming to provide guidelines for the design of advanced armor/antiarmor systems. The outcomes of this three-year program include: (1) A better understanding of the fundamental relationship between the high strain ... |
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| Turbulence and Complex Flow Phenomena in Axial Turbomachines |
SEP 2000 |
32 pages |
| Authors:
Joseph Katz; Charles Meneveau; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
|
| The objective of this project is to measure the flow within turbomachines, and use the data for addressing relevant turbulence-modeling issues. A unique two-stage, axial turbomachine test facility has been constructed. It contains liquid (66% NaI, 34% H2O) with an optical index of refraction that matches that of the acrylic blades of the second stage. Consequently, it allows unobstructed view on the flow within the rotor, stator and the gap ... |
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| Effect of Stoichiometry and Strain Rate on Transient Flame Response |
04 AUG 2000 |
8 pages |
| Authors:
Omar M. Knio; Habib N. Najm; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
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| The interaction of a premixed methane/air flame with a counter-rotating vortex pair is analyzed using a parallel low-Mach-number computational model that is based on a detailed C1C2 chemical mechanism. Attention is focused on the transient response of the heat release rate and the flame structure at the centerline of the vortex pair. Results are obtained for vortex pairs of different strengths under lean, stoichiometric, and rich conditions. For the range ... |
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| A Fundamental Study of Gas and Vapor Bubble Dynamics in Micro-Channels |
JUL 1999 |
26 pages |
| Authors:
A. Prosperetti; W. N. Sharpe; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
|
| The aim of this project was to carry out a fundamental study of the basic: Physics underlying the applications of gas and vapor bubbles in heat transfer systems, pumps, actuators, and other small-scale systems. Since these applications require a detailed understanding of the physics of bubbles in tightly condensed spaces, such as micro channels, a large fraction of the effort has been devoted to this type of problem. Some new ... |
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| Thermo-Fluid Mechanic Study of Thermoacoustic Devices |
15 JUN 97 |
17 pages |
| Authors:
A. Prosperetti; C. Herman; O. Knio; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
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| The work is articulated in three separate projects: (a) development and study of a simplified model of thermoacoustic devices; (b) visualization of oscillating temperature and flow fields; (c) numerical modeling. During the past year, in area (a), work has focused on an approximate time-domain formulation of the thermoacoustic instability and on the heat and momentum exchange modeling; in area (b), heat transfer data have been obtained by holographic interferometry and ... |
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| Numerical Study of Shear-Induced Heating in High-Speed Nozzle Flow |
03 DEC 96 |
207 pages |
| Authors:
Xiyan Shi; Omar M. Knio; Joseph Katz; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
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| During high-speed injection in small-diameter nozzles, a combustible mixture may experience high enough temperature for premature ignition to occur. Among the various physical mechanisms which may lead to such an undesirable effect, shear-induced heating is believed to play an important role. In this effort, the impact of shear heating is analyzed theoretically and numerically. The first part of the study focuses on short-duration events, for which shear heating remains confined ... |
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| Thermo-Fluid Mechanic Study of Thermoacoustic Devices |
15 JUN 96 |
11 pages |
| Authors:
Andrea Prosperetti; Cila Herman; Omar Knio; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
|
| The work is articulated in three separate projects: (a) development and study of a simplified model of thermoacoustic devices; (b) visualization of oscillating temperature and flow flelds; (c) numerical modeling. The progress accomplished in the three areas is briefly reviewed. |
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| Topics in Shallow Water Noise Generation and Scattering |
30 NOV 95 |
22 pages |
| Authors:
Andrea Prosperetti; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
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| A Theoretical Study on Ignition Mechanisms of Liquid Propellants |
14 SEP 94 |
67 pages |
| Authors:
Andrea Prosperetti; He Yuan; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
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| Two possible mechanisms for the accidental ignition of liquid propellants are studied: (i) The heating of the liquid surrounding a strongly compressed gas bubble, and (ii) The heating due to viscous dissipation in a rapidly compressed drop. For the first problem the heating of the gas is calculated precisely rather than estimated on the basis of an adiabatic model. For the second problem proper allowance is made for the temperature ... |
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| Thermo-Fluid Mechanic Study of Thermoacoustic Devices |
27 JUN 94 |
39 pages |
| Authors:
A. Prosperetti; C. Herman; O. Knio; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
|
| The work summarized is divided into three parts. In Part I the development of a simplified model of thermo-acoustic devices is described and the results of its preliminary analysis documented. In Part II the results so far obtained in an experimental program designed for the visualization of flow and heat transfer in a thermoacoustic stack are described. Part III deals with the progress on a full Navier-Stokes numerical simulation of ... |
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| Bubble Clouds and Surface Reverberation of Underwater Noise |
03 JAN 94 |
18 pages |
| Authors:
Andrea Prosperetti; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
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| In a paper presented in 1985 at the Nashville meeting of the Acoustical Society of America we suggested that bubble clouds could oscillate in collective modes that would have a significant effect on underwater sound. For example, bubble clouds form structures capable of oscillating at frequencies as low as a few tens of Hz, even though the constituent bubbles, in isolation, might have natural frequencies of tens of kHz or ... |
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| Shear Localization in a Tungsten Heavy Alloy |
1993 |
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| Authors:
K. T. Ramesh; S. Yadav; J. A. Davis; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
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 | This paper concerned metals in some important way and contained information about, utilized, or discussed these subjects: basic topics: experimental materials related terms: adiabatic shear, iron addition, laser interferometry, microcracking, nickel addition, optical microscopy, sem, shear bands, shearing, strain rate, torsional stress miscellaneous and special technical terms: heavy alloys, microstructure, tungsten alloys. |
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| The Deformation of Tungsten Alloys at High Strain Rates. |
1992 |
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| Authors:
R. S. Coates; K. T. Ramesh; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
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| Several W-Ni-Fe heavy alloys were subjected to high rates of deformation by compression and torsional tests at strain rates of 10(-4) to 7 x 10(3)/s. Results show a rate sensitivity which increased with increasing W content and decreased with increasing amount of swaging. Microhardness was determined and microstructures were analyzed. |
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| The Rate-Dependent Deformation of a Tungsten Heavy Alloy |
91 |
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| Authors:
R. S. Coates; K. T. Ramesh; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
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| The rate-dependent deformation of a liquid-phase-sintered W-Ni-Fe (90%W-7%Ni-3%Fe) heavy alloy was investigated; the results of high strain rate tests (obtained using a compression Kolsky bar) combined with quasi-static data indicate the compressive flow stress of this tungsten heavy alloy increases by perhaps 25% over a range of strain rates from 0.0001/sec up to about 0.007/sec; the material appears to exhibit little or no strain hardening during these dynamic compressive deformations; ... |
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| The Overall Response of Composite Materials Undergoing Large Elastic Deformations |
13 JUN 90 |
66 pages |
| Authors:
Pedro P. Castaneda; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
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| The main goal of this project is to estimate theoretically the overall or effective constitutive properties of nonlinear composite materials undergoing large deformations. Two types of large deformations are of interest; large elastic deformations, and large viscous deformations. The proposed method is to apply variational principles that are under development to characterize the range of the effective properties given partial statistical information about the microstructure (such as the volume fractions ... |
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| Dynamic Fracture Toughness Testing |
15 MAY 89 |
6 pages |
| Authors:
W. N. Sharpe Jr.; A. S. Douglas; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
|
| An optical technique for measuring the crack-tip opening displacement of pre-cracked three-point-bend specimens subjected to impact loading was developed. Procedures for computing a dynamic Load-CTOD plot were also developed; this enables one to determine the dynamic fracture toughness. Finite element analyses were used to verify and extend the procedures. Keywords: Dynamic Loading, Interferometry, Steels, Tungsten. (aw) |
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| Closure Measurements on Short Fatigue Cracks |
JUN 88 |
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| Authors:
J-j. Lee; W. N. Sharpe Jr.; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
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| Crack opening displacements were measured for short surface cracks and for full-width surface cracks initiating at the roots of notches in aluminum specimens. The cracks were measured using an Interferometric Strain/Displacement Gage (ISDG). This minicomputer-controlled measurement system has a resolution of 0.02 microns over gage lengths as short as a few tens of micrometers and enables real-time displacement measurement with storage of the data for post-processing to establish the closure ... |
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| Dynamic Fracture Toughness Evaluation by Measurement of CTOD (Crack Tip Opening Displacement) |
15 MAR 88 |
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| Authors:
William N. Sharpe Jr.; Andrew S. Douglas; Jason M. Shapiro; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
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| Quantification of the dynamic fracture toughness of structural materials is essential to a wide range of problems - from nuclear accidents to ordnance applications. However, the difficulties associated with accurate measurements of cracks under dynamic loading are considerable. Thus there are no standardized procedures and few reliable results. This work describes a systematic study of the dynamic fracture toughness of SAE-01 tool steel, 4340 and HY100 steels and a tungsten, ... |
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| Attachable Interferometric Strain Gages |
FEB 88 |
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| Authors:
William N. Sharpe Jr.; K. C. Wang; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
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| Laser based interferometry from tiny reflective indentations can be used to measure in-plane strain/displacement over a very short gage length (on the order of 100 um). If the specimen material is not reflective, then some other means of generating the interference patterns must be found. This report describes two kinds of attachable gages: plated acetate replicas of indentations and reflective foils that are indented after application. In either case, the ... |
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| Short Fatigue Crack Behavior in Notched 2024-T3 Aluminum Specimens |
JUL 86 |
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| Authors:
J. J. Lee; W. N. Sharpe Jr.; JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICAL ENGINEERING
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| Single-edge, semi-circular notched specimens of Al 2024-T3, 2.3 mm thick, were cyclicly loaded at R-ratios of 0.5, 0.0, -1.0, and -2.0, as part of an AGARD-sponsored, round-robin test program. The notch roots were periodically inspected using a replica technique which duplicates the bore surface. In addition to short crack growth measurements, the crack opening displacement (COD) was measured for surface cracks as short as 0.035 mm and for through- thickness ... |
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Reports by Corporate Author
