| Tensile Deformation of SiC/Ti-15-3 Laminates |
93 |
|
| Authors:
B. A. Lerch; J. F. Saltsman; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
 | Investigated was the damage mechanisms of a laminated, continuous sic fiber-reinforced ti-15-3 composite. specimens consisting of unidirectional as well as cross-ply laminates were pulled in tension to failure at room temperature and 427c and subsequently examined metallographically. selected specimens were interrupted at various strain increments and examined to document the development of damage. when possible, a micromechanical stress analysis was performed to aid in the explanation of the observed damage. ... |
|
| Micromechanical Analysis of Fiber Fracture |
93 |
|
| Authors:
P. Carman Gregory; John J. Lesko; Kenneth L. Reifsnider; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| To study the perturbed stress field in a general unidirectional composite system containing fiber fractures, a closed-form analytical model is developed in this paper. the model includes analysis of eccentrically oriented fibers and multiple fiber fractures with the use of an approximating geometry. the theory developed incorporates a functional dependence of stress/strain concentration on constituent material properties, fiber volume fraction, crack size, multiple fiber fracture, and fiber eccentricity, utilizing a ... |
|
| Micromechanics of Tensile Strength in Composite Systems |
93 |
|
| Authors:
Zhanjun Gao; Kenneth L. Reifsnider; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| Tensile strength of composites is the subject of this paper. the fibers are assumed to have a statistical distribution of flaws of the weibull type. the equation developed contains the weibull shape factor, m, stress concentration factors due to fiber fractures, c(sub i), and the ineffective length, delta. m is the uniformity of the fiber strength. c(sub i) characterizes the disturbance of stress in neighboring unbroken fibers when i number ... |
|
| Analysis of Thermomechanical Fatigue of Unidirectional Titanium Metal Matrix Composites |
93 |
|
| Authors:
M. Mirdamadi; W. S. Johnson; Y. A. Bahei-el-Din; M. G. Castelli; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| A ti-15v-3cr-3al-3sn (ti-15-3) material reinforced with scs-6 silicon carbide for both in-phase and out-of-phase was tested for thermomechanical fatigue. the two phases showed significant differences in failure mechanisms and fatigue life. this paper has applied a micromechanics model to analyze data. the analysis predicts the stresses in the fiber and in the matrix material during the thermal and mechanical cycling. this is accomplished by calculating both the thermal and mechanical ... |
|
| High-Temperature Tension-Compression Fatigue Behavior of a Unidirectional Tungsten Copper Composite |
93 |
|
| Authors:
Michael J. Verrilli; Timothy P. Gabb; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| This paper investigates the high-temperature fatigue behavior of a of a 0(sub 12) tungsten fiber-reinforced copper matrix composite. specimens with a vol pct of 10 and 36 were fatigued under fully reversed, strain-controlled conditions at both 260 and 560 c. the fatigue life was found to be independent of fiber volume fraction. the fatigue life was shorter at 560 c compared to 260 c because of change in mode of ... |
|
| High-Cycle Fatigue Crack Growth Properties of Aramid-Reinforced Aluminum Laminates |
93 |
|
| Authors:
Stefanie E. Stanzl-Tschegg; Maria Papakyriacou; Herwig R. Mayer; Jaap Schijve; Elmar K. Tschegg; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| The fatigue crack growth properties of the laminated fiber-reinforced composite material arall(6) (arall 1 and arall 2) have been studied at low cyclic stress amplitudes and high numbers of cycles. a high frequency ultrasound resonance fatigue machine was used. the threshold stress intensity was determined by performing tests and increasing the stress amplitude stepwise. the threshold stress is proportional to the crack length. tests with constant cyclic stress amplitude were ... |
|
| PERFORMANCE OF PROTECTIVE CLOTHING, FOURTH VOLUME. |
01 JAN 1992 |
|
| Authors:
NORMAN W. HENRY; JAMES P. MCBRIARTY; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| THE FOURTH INTERNATIONAL SYMPOSIUM ON THE PERFORMANCE OF PROTECTIVE CLOTHING WAS TRULY INTERNATIONAL IN THAT PRESENTATIONS REPRESENTING TEN DIFFERENT COUNTRIES WERE GIVEN, AND FOR THE FIRST TIME IT WAS HELD OUTSIDE OF THE UNITED STATES. PREVIOUS SYMPOSIA FOCUSED ON PROTECTIVE CLOTHING STANDARDS DEVELOPMENT OVER THE LAST TEN YEARS; WHILE THIS SYMPOSIUM'S THEME WAS 'CHALLENGES FOR DEVELOPING PROTECTIVE CLOTHING IN THE 1990S AND BEYOND.' MANY OF THE PRESENTATIONS AND POSTERS REPORTED ... |
|
| Acoustic Emission Monitoring of Fatigue in Titanium Aluminide XD composite |
92 |
|
| Authors:
Eun U. Lee; Dianne M. Granata; William R. Scott; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| An investigation was conducted on the feasibility of acoustic emission (ae) monitoring of fatigue crack growth in titanium aluminide xd composites. under tension-tension and compression-compression loading, the total accumulated number of ae events corresponds closely to the fatigue crack growth. the majority of the ae occurs near the maximum load during up loading. in the tension fatigue test, the ae is controlled by the stress intensity factor, and its relationship ... |
|
| Nondestructive Characterization for Metal-Matrix Composite Fabrication |
92 |
|
| Authors:
Peter K. Liaw; Robert E. Shannon; William G. Clark Jr.; William C. Harrigan Jr; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| Composite products at different stages of fabrication processes including raw powders, powder mixtures, billets, and final product extrusions have had nondestructive characterization performed on them. eddy current was found to be effective in identifying matrix powder alloy chemistry and particle size, and in determining the mix ratio of silicon carbide (sic) reinforcement particles in aluminum matrix alloy powders. in large scale consolidated powder metallurgy (p/m) metal-matrix composite (mmc) billets ultrasonic ... |
|
| Thermomechanical Testing of High-Temperature Composites: Thermomechanical Fatigue (TMF) Behavior of SiC(SCS-6)/Ti-15-3 |
92 |
|
| Authors:
Michael G. Castelli; Paul Bartolotta; John R. Ellis; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| Recently developed thermomechanical testing techniques for monolithic structural alloys were successfully extended to continuous fiber-reinforced composite materials in plate form. the success of this adaptation was verified on a model mmc material, namely sic(scs-6)/ti-15v-3cr-3al-3sn. the effects of heating system type and specimen preparation are also addressed. cyclic lives determined under full thermomechanical conditions were shown to be significantly reduced from those obtained under comparable isothermal and in-phase bithermal conditions. fractography ... |
|
| High-Temperature Fatigue Behavior of a SiC/Ti-24Al-11Nb Composite |
92 |
|
| Authors:
Paul A. Bartolotta; Pamela K. Brindley; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| Because of its high strength-to-density ratio the intermetallic composite sic/ti-24al-11nb has generated a lot of interest for aerospace applications. the fatigue response of unidirectional sic/ti-24al-11nb isothermally fatigued at 425 to 815 c. another topic of this experiment is the influence of test methodology on failure mechanisms. this experiment is the first portion of an ongoing examination of fatigue properties and damage mechanisms in sic/ti-24al-11nb. |
|
| A Macro-Micromechanics Analysis of a Notched Metal Matrix Composite |
92 |
|
| Authors:
Catherine A. Bigelow; Rajiv A. Naik; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| In order to determine the matrix and fiber behavior near the notch tip in a center-notched metal matrix composite a macro-micromechanics analysis was formulated. a boron/aluminum monolayer was used with the results presented in the following report. using a three-dimensional finite element program that uses vanishing-fiber-diameter model to model the elastic behavior of the fiber and the elastic-plastic behavior of the matrix the macro-level analysis models the entire notched specimen. ... |
|
| Apparatus for Thrust Wear Testing of Advanced Tribological Materials. |
1992 |
|
| Authors:
Scott L. Horman; Ronald K. Eyre; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| This paper examines an apparatus developed for use in the wear testing of advanced bearing materials. A brief review of the applications of polycrystalline diamond as a tribological material is given as background for the development of the apparatus. The apparatus tests materials in a sliding thrust wear mode in an area contact configuration. Cylindrical specimens are located on a concentric circle pattern, and the flat ends are mated together. ... |
|
| Wear Diagram for Sliding of Silicon Nitrides. |
1992 |
|
| Authors:
Dae-Soon Lim; Seong-Khil Park; Hahngue Moon; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| Knowledge of the friction and wear behavior of ceramics is essential for their successful tribological applications in advanced mechanical systems. Understanding of this important behavior is very limited because of the complexity of the wear processes. In this study, wear diagrams, which are three-dimensional representations of the dependence of the wear on the applied pressure and the sliding velocity were constructed from sliding test data with silicon nitride specimens. Two ... |
|
| Sliding Wear Testing and Data Analysis Strategies for Advanced Engineering Ceramics. |
1992 |
|
| Authors:
Peter J. Blau; Charles S. Yust; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| Thousands of wear tests are conducted each year on advanced engineering ceramics, and the number will undoubtedly continue to grow. Most of these tests are conducted to screen or evaluate ceramic-based materials for specific applications: a smaller number are ostensibly conducted for more basic research purposes. Significantly, even the more generic testing is often justified by identifying potential applications for the results of that work. Most wear test methodology is ... |
|
| Some Improvements in the Flexural Damping Measurement Technique. |
1992 |
|
| Authors:
Joseph E. Bishop; Vikram K. Kinra; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| This paper concerned mmc in some important way and contained information about, utilized, or discussed these subjects: basic topics:, composite materials, data, experimental, theoretical, materials and material types:, 6061 matrix, al matrix material characteristics and data fields:, cte, damping data, flexural damping data, mechanical properties, sdc, strain data, thermal conductivity, thermoelastic damping, young's modulus parameter values relevant to the data:, t6 testing and test conditions:, bending tests, cantilever beam tests ... |
|
| A Fundamental Connection Between Intrinsic Material Damping and Structural Damping. |
1992 |
|
| Authors:
Vikram K. Kinra; Carlos L. Yapura; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| This paper concerned mmc in some important way and contained information about, utilized, or discussed these subjects: basic topics:, composite materials, pmc, theoretical materials and material types:, epoxy matrix, gr/epoxy material characteristics and data fields:, damping, elastic stiffness, mechanical properties, poisson's ratio, shear modulus, stiffness, young's modulus miscellaneous and special technical terms:, mathematical, n00014-90-j-1130 grants, onr, schematics, structural dampings, texas a&m university, timoshenko beams. |
|
| Radiation Damage in Fusion Window Materials Studies by Thermal Conductivity. |
1992 |
|
| Authors:
Magnus Rohde; Brigitte Schulz; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| The high-temperature thermal conductivity of ceramic materials that are candidates for an application as RF transmission windows in a fusion reactor was examined. Materials of interest are aluminum oxide (Alsub2Osub3), aluminum nitride (AlN), and magnesium aluminum oxide (MgAlsub2Osub4). In order to stimulate the fast nuetron interaction within the RF windows in an operating fusion reactor, different nuetron sources with different energies were used. Additionally alpha particle irradiation was performed in ... |
|
| Standard Practice for Handling Densified Articles of Silicon Nitride Reinforced with Silicon Carbide Whiskers |
DEC 91 |
|
| Authors:
AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| This standard is issued under the fixed designation E 1436; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A superscript epsilon indicates an editional change since the last revision or reapproval. This practice describes recommended procedures for the safe handling of densified articles made from ... |
|
| Assessing LOX Compatibility for Aluminun-Lithium Alloys |
91 |
|
| Authors:
Bao K. Nguyen; Bruce T. Pham; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| High strength lithium bearing aluminum alloys offer a significant cost saving potential for application to advanced launch and space vehicles; three well developed alloys, Al-Li 2090, Al-Li 8090, and Weldalite 049, were evaluated for potential application to the large liquid oxygen and hydrogen tanks for the Advanced Launch System; a series of oxygen compatibility tests evaluation was conducted which included the mechanical impact test in liquid and gaseous oxygen, as ... |
|
| Further Developments in the Design and Analysis of Adhesive-Bonded Structural Joints. |
1991 |
|
| Authors:
L. J. Hart-Smith; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
|
| Improving Composite Bolted Joint Efficiency by Laminate Tailoring. |
1991 |
|
| Authors:
J. R. Eisenmann; J. L. Leonhardt; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
|
| Experimental Determination of the Mode I Behavior of a Delamination Under Mixed-Mode Loading. |
1991 |
|
| Authors:
Anoush Poursartip; Narine Chinatambi; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
|
| ASTM STANDARDS ON PROTECTIVE CLOTHING. |
01 OCT 1990 |
|
| Authors:
AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| THIS COMPILATION IS SPONSORED BY ASTM COMMITTEE F-23 ON PROTECTIVE CLOTHING. IT CONTAINS 50 STANDARD SPECIFICATIONS, TEST METHODS, PRACTICES, AND GUIDES. FOURTEEN STANDARDS ARE UNDER THE JURISDICTION OF COMMITTEE F-23 AND COVER RESISTANCE OF PROTECTIVE CLOTHING MATERIALS TO PERMEATION BY LIQUIDS AND GASES, AND RESISTANCE TO PENETRATION BY LIQUIDS; THERMAL PROTECTIVE PERFORMANCE; EVALUATION OF HEAT TRANSFER; PRESSURE TESTING OF GAS-TIGHT, TOTALLY-ENCAPSULATING CHEMICAL PROTECTIVE SUITS; EVALUATION OF COMFORT, FIT, FUNCTION, AND ... |
|
| Helium-Induced Degradation in the Weldability of an Austenitic Stainless Steel |
90 |
|
| Authors:
Hua T. Lin; Steve H. Goods; Martin L. Grossbeck; Brian A. Chin; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| Autogenous gas tungsten arc welding was performed on helium doped Type 316 (UNS 531600) stainless steel; using the tritium trick, helium was uniformly implanted in the material, to levels of 27 and 105 appm; in both fusion and heat-affected zones (HAZ), severe intergranular cracking occurred; microstructural observations of the fusion zone indicated that the degree of porosity, tendency to form cracks, and the pore size increased with increasing helium concentration; ... |
|
| Stress Corrosion Cracking in Alloy 400 (UNS NO4400) at Room Temperature |
90 |
|
| Authors:
Leah G. Everhart; Christopher E. Price; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| Selective pitting studies of Alloy 400 were used to determine environments likely to cause stress corrosion cracking (SCC); slow strain rate tests were performed on waisted specimens, with strain rate, prior cold work, solution composition and concentration, and grain size as variables; it was discovered that environments which caused pitting also caused SCC; examples include ammonium persulfate, ammonium hydroxide, and hydrofluoric acid in the presence of an oxidizer; the SCC ... |
|
| Corrosion Fatigue Cracking of Chromium-Containing Steels |
90 |
|
| Authors:
Brian D. Harty; Robert E. J. Noel; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| By subjecting to cyclic loading in distilled water, air, and low chloride containing waters, three chromium-containing steels, 3CR12, Alloy 825, and AISI 431 have been examined for corrosion fatigue cracking; when subjected to the aqueous environments the 3CR12 steel showed significant fatigue crack growth rate (FCGR) enhancement; fractography revealed the presence of isolated regions of intergranular and cleavage cracking that were correlated with plateaus observed on the FCGR curves; the ... |
|
| Directory of Testing Laboratories |
90 |
|
| Authors:
AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| The Directory of Testing Laboratories lists the locations and capabilities of testing laboratories that perform services for a fee. The information on the types of tests performed, materials analyzed, or other services offered is based on questionnaires signed and submitted by officers of the laboratories. Each laboratory pays a fee for the annual listing. |
|
| Temperature-Dependent Tensile and Shear Response of P100/6061 Graphite- Aluminum |
90 |
|
| Authors:
Takahiro Fujita; Marek-Jerzy Pindera; Carl T. Herakovich; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| This paper summarizes the results of an investigation conducted to characterize tensile and shear response of p100/6061 graphite-al composite in the temp range -101 to 260 c (-150 to 500 f). the off-axis tension test and iosipescu shear test methods were employed to meet this objective. the experimental results indicate that both the fiber dominated and matrix dominated elastic properties exhibit relatively small changes in the considered temp range. the ... |
|
| ASTM STANDARDS FOR CORROSION TESTING OF METALS. |
1990 |
|
| Authors:
AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| THIS COMPILATION IS SPONSORED BY ASTM COMMITTEE G-1 ON CORROSION OF METALS. IT CONTAINS ALL OF THE METAL CORROSION TEST STANDARDS NOT FOUND IN THE ANNUAL BOOK OF ASTM STANDARDS, VOLUME 03.02, ON WEAR AND EROSION AND METAL CORROSION. A TOTAL OF 67 STANDARDS HAVE BEEN COMPILED FROM 23 VOLUMES OF THE ANNUAL BOOK OF ASTM STANDARDS. A CROSS-INDEX OF METAL CORROSION STANDARDS INCLUDING ASTM, NACE, AND ISO STANDARDS APPEARS ... |
|
| Some Observations About Test Specimens and Structural Analysis for Fibrous Composites. |
1990 |
|
| Authors:
L. J. Hart-Smith; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
|
| Investigation of Damage in Composite Laminates Using the Incremental Strain Test. |
1990 |
|
| Authors:
R. E. Swain; K. L. Reifsnider; J. Vittoser; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
|
| A Failure Criterion Evaluation for Composite Materials. |
1990 |
|
| Authors:
S. M. Cron; A. N. Palazotto; R. S. Sandhu; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
|
| Fracture Mechanics: Perspectives and Directions (Twentieth Symposium) |
NOV 89 |
|
| Authors:
R. P. Wei; R. P. Gangloff; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
|
| Flammability and Sensitivity of Materials in Oxygen-Enriched Atmospheres: Fourth Volume |
JUL 89 |
|
| Authors:
J. M. Stoltzfus; F. J. Benz; J. S. Stradling; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
|
| STANDARD GUIDE FOR SELECTION OF CHEMICALS TO EVALUATE PROTECTIVE CLOTHING MATERIALS. |
27 FEB 1989 |
|
| Authors:
AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| THE PURPOSE OF THIS GUIDE IS TO PROVIDE A RECOMMENDED LIST OF BOTH LIQUID AND GASEOUS CHEMICALS FOR EVALUATING PROTECTIVE CLOTHING MATERIALS IN TESTING PROGRAMS. RESULTS DERIVED FROM TESTING PROGRAMS USING THESE LISTS OF CHALLENGE CHEMICALS ARE NOT INTENDED FOR THE DEFINITIVE CHARACTERIZATION OF PROTECTIVE CLOTHING MATERIALS. THIS LIST OF CHALLENGE CHEMICALS IS NOT INCLUSIVE OF ALL CHEMICAL CHALLENGES; THE CHEMICALS WERE CHOSEN TO REPRESENT BROAD RANGES OF LIQUID AND ... |
|
| Creep Behavior of Zircaloy Cladding Under Variable Conditions |
89 |
|
| Authors:
Y. Matsuo; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| Various creep tests were conducted on Zircaloy cladding tubes under variable conditions to determine which hardening rule can be applicable for the creep behavior associated with condition changes; the results show that the strain-hardening rule is applicable in general when either the stress or temperature conditions change, except that a certain amount of creep strain recovery is observed in case of stress drop; in stress reversal conditions, however, "softening" of ... |
|
| Directory of Testing Laboratories |
89 |
|
| Authors:
AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| The Directory of Testing Laboratories lists the locations and capabilities of testing laboratories that perform services for a fee. The information on the types of tests performed, materials analyzed, or other services offered is based on questionnaires signed and submitted by officers of the laboratories. Starting with the 1988 Edition, this Directory became an annual ASTM publication. The 1989 Edition features: geographical segmentation of listings by country, state, and city; ... |
|
| Stiffness Change of a Graphite Epoxy Laminate under Reverse Fatigue Loading, |
1989 |
|
| Authors:
Assa Rotem; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| The stiffness of a flat specimen, made of graphite/epoxy (T300/934), was measured during reverse fatigue loading. Laminates of basic layup, unidrectional cross-ply and angle-ply, as well as multidirectional (isotropic) layup, were tested. It was found that all the laminates exhibit rapid stiffness degradation on the last (third) fatigue stage. It is shown that, for this material, stiffness degradation is a result of crack accumulation, mainly along the fibers, even for ... |
|
| Predictions of Poisson's Ratio in Cross-Ply Laminates Containing Matrix Cracks and Delaminations, |
1989 |
|
| Authors:
Charles E. Harris; David H. Allen; Eric W. Nottorf; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| A damage-dependent constitutive model for laminated composites was developed for the combined damage modes of matrix cracks and delaminations. The model is based on the concept of continuum damage mechanics and uses second-order tensor valued internal state variables to represent each mode of damage. The internal state variables are defined as the local volume average of the relative crack face displacemenmts. Since the local volume for delaminations is specified at ... |
|
| The Effect of Cooling Rate on Residual Stress in a Thermoplastic Composite, |
1989 |
|
| Authors:
K. S. Kim; H. T. Hahn; R. B. Croman; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| The effect of cooling rate on residual stress development in a graphite/thermoplastic matrix composite was studied by monitoring warping of an unsymmetric cross-ply laminate. Being amorphous, the thermoplastic resin showed only a minimal sensitivity to the cooling rates employed. The residual stresses at room temperature were high enough to cause ply cracking. Therefore, the effect of transverse crack on the curvature was evaluated by using a modified stiffness model based ... |
|
| An Evaluation of Composite Material Compression Test Methods, |
1989 |
|
| Authors:
Jerome S. Berg; Donald F. Adams; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| Discrepancies concerning the compressive strength of composite materials exist mainly because of the test method used. An experimental evaluation of three compressive test fixtures, namely, the Illinois Institute of Technology Research Institute (IITRI), modified Celanese, and end-loaded side-supported, selected based on a literature search, was performed. Mechanical testing of glass/epoxy and carbon/epoxy composite materials indicated the IITRI test fixture, currently a ASTM Test Method for Compressive Properties of Unidirectional or ... |
|
| CHEMICAL PROTECTIVE CLOTHING PERFORMANCE IN CHEMICAL EMERGENCY RESPONSE. |
1989 |
|
| Authors:
J. L. PERKINS; J. O. STULL; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| THIS PUBLICATION IS A RESULT OF AN INTERNATIONAL SYMPOSIUM ON PROTECTIVE CLOTHING AND FOCUSES ON CHEMICAL PROTECTIVE CLOTHING PERFORMANCE IN CHEMICAL EMERGENCY RESPONSE. PAPERS PRESENTED WITHIN THIS PUBLICATION INCLUDE OVERVIEWS ON CHEMICAL PROTECTIVE CLOTHING, PROTOCOLS USED TO EVALUATE ENTIRE PROTECTIVE SUITS (INCLUDING DECONTAMINATION), DIFFERENT ASPECTS OF PROTECTIVE CLOTHING MATERIAL CHEMICAL RESISTANCE TESTING OR CHEMICAL PERMEATION RESEARCH, SPECIALIZED APPLICATIONS WITHIN CHEMICAL EMERGENCY RESPONSE, AND A SECTION ON STANDARDS, POLICIES, AND PROCEDURES ... |
|
| COMPUTERIZATION AND NETWORKING OF MATERIALS DATA BASES. |
1989 |
|
| Authors:
Jerry S. Glazman; JOHN R. RUMBLE JR.; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| USING COMPUTERS TO DELIVER MATERIALS INFORMATION IS NOW A REALITY. MANY GROUPS THAT PREVIOUSLY PUBLISHED ARE NOW USING DATA BASES TO MAKE AVAILABLE TO THE GENERAL PUBLIC PROPERTY DATA FOR METALS, ALLOYS, COMPOSITES, POLYMERS, AND PLASTICS. MANY MORE DATA BASES ARE BEING DEVELOPED FOR INDIVIDUAL COMPANIES. ASTM HAS ESTABLISHED COMMITTEE E49 ON COMPUTERIZATION OF MATERIAL PROPERTY DATA TO DEVELOP STANDARDS AND GUIDELINES FOR MATERIALS DATABASES. THE GOAL IS NOT TO ... |
|
| Micromechanics of Compression Failures in Open Hole Composite Laminates. |
1989 |
|
| Authors:
E. Gail Guynn; Walter L. Bradley; Wolf Elber; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
|
| Analytical and Experimental Methods for Residual Stress Effects in Fatigue |
NOV 88 |
|
| Authors:
R. L. Champoux; J. H. Underwood; J. A. Kapp; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| Separate records are available on three papers from this symposium; see MCIC-138457 to MCIC-138459. |
|
| STANDARD CLASSIFICATION SYSTEM FOR CHEMICALS ACCORDING TO FUNCTIONAL GROUPS. |
30 OCT 1988 |
|
| Authors:
AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
| THIS STANDARD IS TO PROVIDE A CLASSIFICATION SYSTEM FOR CHEMICAL COMPOUNDS; PRIMARILY BY FUNCTIONAL GROUPS WITH A THREE-DIGIT NUMERICAL CODE. POLYFUNCTIONAL COMPOUNDS CAN BE CROSS-INDEXED BY USE OF AS MANY CODES AS THERE ARE FUNCTIONAL GROUPS. IN MANY SITUATIONS WHERE CHEMICALS ARE INTERACTING WITH OTHER CHEMICALS OR MATERIALS, THE INTERACTION IS STRONGLY DEPENDENT AND OFTEN CORRELATED WITH THE FUNCTIONAL GROUPS PRESENT. THESE INTERACTIONS INCLUDE CHEMICAL REACTION, DISSOLUTION AND SWELLING/PERMEATION OF ... |
|
| Mechanics of Fatigue Crack Closure |
JUN 88 |
|
| Authors:
J. C. Newman Jr.; W. Elber; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
|
| Hydrogen Embrittlement: Prevention and Control, |
JUN 1988 |
|
| Authors:
L. Raymond; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
|
| Degradation of Metals in the Atmosphere |
FEB 88 |
|
| Authors:
S. W. Dean; T. S. Lee; AMERICAN SOCIETY FOR TESTING AND MATERIALS PHILADELPHIA PA
|
|
Reports by Corporate Author
