| Crack Growth Resistance of Ceramic Composite |
93 |
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| Authors:
Seijiro Hayashi; H. Baba; A. Suzuki; ISHIKAWAJIMA-HARIMA HEAVY INDUSTRIES CO LTD TOKYO (JAPAN)**
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 | Fracture process zone in SiC(w)/Si3N4 ceramic composite was studied by a hybrid experimental-numerical analysis employing moire interferometry and finite element analysis. A chevron-notched, wedge-loaded double cantilever beam specimen was used to obtain a stable crack growth. The relation between crack closure stress and crack opening displacement which govern fracture process zone was obtained. |
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| Particle Impact Damage in Silicon Carbide |
91 |
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| Authors:
A. Suzuki; T. Natsumura; S. Sugiyama; T. Teramae; S. Hamada; ISHIKAWAJIMA-HARIMA HEAVY INDUSTRIES CO LTD TOKYO (JAPAN)**
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| The impact damage that occurred in silicon carbide plates was investigated by projectile impact tests. Target plates of silicon carbide with two different thicknesses were impacted by three kinds of projectiles with various speeds ranging from 30 m/s to 500 m/s. Projectiles were 5 mm(phi) and 3 mm(phi) steel spheres and 5 mm(phi) silicon carbide spheres. Various mode of damage were observed such as indentation concave, ring and cone cracks, ... |
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| Properties of a Beta-Type Ti-22V-4Al Alloy, |
NOV 1986 |
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| Authors:
Y. Ohtakara; M. Imamura; A. Suzuki
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| A new metastable beta titanium alloy (Ti-22V-4Al) has been developed to improve the cold workability. The as solution-treated alloy was found to be a relatively soft beta alloy with 74 kg/sq mm of tensile strength and 62% of reduction in area. After aging at 475 C for 4 hours, the maximum tensile strength, 112 kg/sq mm, was obtained with reduction in area, 32%. These values were comparable with the conventional ... |
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| Characteristics of a Large Iron-Base Heat Resistant Alloy Rotor Forging, |
OCT 1986 |
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| Authors:
M. Kohno; T. Honjo; S. Kinoshita; A. Suzuki
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| A modified SUH660 large rotor forging from a 16 ton ESR ingot was manufactured and it's properties were investigated. The tensile properties at each location and direction satisfied SUH660 specifications and differences due to location and direction were rather small. The creep rupture strength of the large rotor forging is comparable to that of the small size forging reported previously. From the results of low-cycle fatigue tests at surface and ... |
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| Mechanical Properties of Alloy A286 at Cryogenic Temperature, |
DEC 1985 |
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| Authors:
M. Kohno; T. Moriyama; M. Shimada; A. Suzuki
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| The strength and the toughness of Fe-base superalloy A286, which has been used as the structural material in cryogenic environments, were investigated at temperature range from room temperature to 4.2K by comparing with stainless steel SUS 304LN and Ni-base superalloy Inconel 718. The influence of grain size on mechanial properties of alloy A286 was also discussed. The temperature dependence of the strength and toughness of alloy A286 was smaller than ... |
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| Mechanical Properties of Vacuum Carbon-Deoxidized Thick-Wall 2-1/4Cr-1Mo Steel Forging |
JAN 82 |
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| Authors:
M. Kohno; M. Makioka; S. Kinoshita; A. Suzuki; KOBE STEEL LTD (JAPAN)*
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| The effect of postweld heat treatment on the susceptibility to temper embrittlement of 2.25Cr-1Mo steel forgings which have various silicon contents has been investigated. Then, to verify the validity of low-silicon 2.25Cr-1Mo steel for an actual forging, the mechanical properties and the susceptibility to temper embrittlement of a 296-mm-thick forged ring made from a 100-ton ingot with silicon content reduced to below 0.10 percent by the vacuum carbon deoxidation (VCD) ... |
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| Contribution of Amorphous Material to Properties of a Laboratory-Prepared Soil |
AUG 1980 |
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| Authors:
R. N. Yong; A. J. Seth; A. Suzuki; MCGILL UNIV MONTREAL (QUEBEC)
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| The presence and the importance of amorphous material are becoming recognized in sensitive soils and have been documented in previous studies. In order to further appreciate the specific contributions and influences of the varying composition of amorphous material to a sensitive soil, it is necessary to obtain a soil system where the individual components can be rigorously controlled and subjected to proper scrutiny. To achieve this, the laboratory-prepared soils were ... |
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| Contribution of Amorphous Material to Properties of a Laboratory-Prepared Sensitive Clay |
SEP 1979 |
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| Authors:
R. N. Yong; A. J. Sethi; A. Suzuki; MCGILL UNIV MONTREAL (QUEBEC)
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| In order to fully appreciate the specific contributions and influences of the varying composition of amorphous material to a sensitive soil, it is necessary to obtain a soil system where the individual components can be rigorously controlled and subjected to proper scrutiny. To achieve this, the laboratory-prepared sensitive clays were obtained by mixing synthesized amorphous iron-silicone mixed hydroxides of varying composition with silt size particles of primary minerals such as ... |
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| FRACTURE TOUGHNESS OF TURBINE ROTOR MATERIAL AROUND ROOM TEMPERATURE AND VALIDITY CRITERION FOR PLANE STRAIN FRACTURE TOUGHNESS |
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| Authors:
H. Kikuchi; A. Suzuki; M. Aoki; K. Ikeda
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| the plane strain fracture toughness of 2.8% ni-cr-mo-v steels was evaluated at the lowest service temperature (around room temperature) using huge size specimen with 345 mm in thickness and 920 mm in diameter, probably the largest fracture toughness specimen ever tested in the world. the validity criterion for k(sub ic) has been investigated by using various sizes of compact tension specimens. |
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Reports by Author
