X-Ray Diffraction Study of Fracture Surface Made by Fracture Toughness Tests of Blunt Notched CT Specimen of Aluminum Alloy

1986 ◽  
Vol 30 ◽  
pp. 537-544 ◽  
Author(s):  
Akira Suzuki ◽  
Akira Tanji ◽  
Zenjiro Yajima ◽  
Yukio Hirose ◽  
Keisuke Tanaka
Keyword(s):  
Fracture Toughness ◽  
Aluminum Alloy ◽  
Fracture Surface ◽  
Diffraction Method ◽  
High Strength ◽  
Compact Tension ◽  
X Ray Diffraction ◽  
Notch Radius ◽  
X Ray ◽  
Fracture Surfaces

X-ray fractography is a new method utilizing the X-ray diffraction technique to observe the fracture surface for the analysis of the micro-mechanisms and mechanics of fracture.In the present paper, X-ray fractography is applied to fracture surfaces of high strength aluminum alloy (JIS 7075-T6). The fracture toughness tests were conducted by using compact tension (CT) specimens with blunt notches and fatigue pre-cracks. The distribution of the residual stress near fracture surfaces was measured by the X-ray diffraction method. The effect of the notch radius on the fracture toughness value was discussed.

X-Ray Residual Stress Measurement on Stress Corrosion Fracture Surfaces

1992 ◽  
Vol 36 ◽  
pp. 543-549
Author(s):  
Masaaki Tsuda ◽  
Yukio Hirose ◽  
Zenjiro Yajima ◽  
Keisuke Tanaka
Keyword(s):  
Fracture Toughness ◽  
Residual Stress ◽  
Fracture Surface ◽  
Stress Corrosion ◽  
Stress Measurement ◽  
High Strength Steels ◽  
High Strength ◽  
X Ray Diffraction ◽  
X Ray ◽  
Fracture Surfaces

X-ray fractography is a new method utilizing the X-ray diffraction technique to observe the fracture surface for the analysis of the micromechanisms and mechanics of fracture. X-ray residual stress has been confirmed to be a particularly useful parameter when studying the fracture surfaces of high strength steels. The method has been applied to the fracture surface of fracture toughness and fatigue specimens.

X-ray Residual Stress Measurement on Fracture Surface of Stress Corrosion Cracking

1989 ◽  
Vol 33 ◽  
pp. 327-334 ◽  
Author(s):  
Masaaki Tsuda ◽  
Yukic Hirose ◽  
Zenjiro Yajima ◽  
Keisuke Tanaka
Keyword(s):  
Fracture Toughness ◽  
Residual Stress ◽  
Fracture Surface ◽  
Stress Corrosion ◽  
Stress Corrosion Cracking ◽  
Stress Measurement ◽  
High Strength Steels ◽  
High Strength ◽  
X Ray Diffraction ◽  
X Ray

X-ray fractography is a new method utilizing the X-ray diffraction technique to observe the fracture surface for the analysis of the micromechanisms and mechanics of fracture. The X-ray residual stress has been confirmed to be a particularly useful parameter when studying the fracture surfaces of high strength steels. The method has been applied to the fracture surface of fracture toughness and fatigue specimens.

Pre-Cracking Technique and its Application to X-Ray Fractography of Alumina Ceramics

1987 ◽  
Vol 31 ◽  
pp. 261-268 ◽  
Author(s):  
Tadao Mishima ◽  
Hiroyuki Yoshida ◽  
Yukio Hirose ◽  
Keisuke Tanaka
Keyword(s):  
Fracture Toughness ◽  
Fracture Surface ◽  
New Method ◽  
Alumina Ceramics ◽  
X Ray Diffraction ◽  
Notch Radius ◽  
Longitudinal Compression ◽  
Notched Specimen ◽  
X Ray ◽  
Cracked Specimens

X–ray fractography is a new method utilizing the X–ray diffraction technique to observe the fracture surface for the analysis of the micromechanisms and mechanics of fracture.In the present study, X–ray fractography was applied to brittle fracture of alumina ceramics. The first part deals with our new method of pre–cracking of ceramics. Pre–cracking was introduced to a singleedge notched specimen by longitudinal compression. Then the fracture toughness tests were conducted with pre–cracked specimens as well as notched ones. The effect of the notch radius on the fracture–toughness value was determined. The second part describes the result of X–ray fractography.

X-Ray Diffraction Observation of Fracture Surfaces of Ductile Cast Iron

1982 ◽  
Vol 26 ◽  
pp. 291-298 ◽  
Author(s):  
Zenjiro Yajima ◽  
Yukio Hirose ◽  
Keisuke Tanaka
Keyword(s):  
Fracture Toughness ◽  
Cast Iron ◽  
Compact Tension ◽  
Ductile Cast Iron ◽  
Line Broadening ◽  
X Ray Diffraction ◽  
X Ray ◽  
Three Point Bending ◽  
Fracture Surfaces ◽  
Machine Parts

X-ray diffraction observation of metal fractures provides fracture analysists with useful information on the mechanisms and mechanical conditions of fracturing. This method is called “X-ray fractography” and has been developed especially in Japan as a new engineering tool for fracture analysis.In the present paper, X-ray fractography is applied to fracture surfaces of ductile cast iron (JIS FCD 60) which are widely used as machine parts. The fracture toughness tests were conducted at ambient and low temperatures by using compact tension (CT) specimens with blunt notches and three-point bending (TPB) specimens with fatigue pre-cracks. The line broadening of X-ray diffraction profiles was measured on and beneath fracture surfaces of fracture toughness specimens.

X-ray Fractographic Approach to Fracture Toughness of AISI 4340 Steel

1984 ◽  
Vol 28 ◽  
pp. 289-296 ◽  
Author(s):  
Yukio Hirose ◽  
Zenjiro Yajima ◽  
Keisuke Tanaka
Keyword(s):  
Fracture Toughness ◽  
Residual Stress ◽  
Fracture Surface ◽  
Internal Structure ◽  
Compact Tension ◽  
X Ray Diffraction ◽  
Tempering Temperature ◽  
Aisi 4340 Steel ◽  
X Ray ◽  
Tip Radius

X-ray diffraction observation of the material internal structure beneath fracture surfaces provide fracture analysists with useful information to investigate the conditions and mechanisms of fracture. X-ray fractography is a generic name given to this technique. In the present study, the residual stress on the fracture surface of the compact tension specimens for toughness tests was measured by X-ray diffraction. The effects of notch-tip radius and tempering temperature on the fracture toughness are discussed based on the results of X-ray fractography and fracture micromechanisms.

X-Ray Fractography on Stress Corrosion Cracking of High Strength Steel

1983 ◽  
Vol 27 ◽  
pp. 213-220 ◽  
Author(s):  
Yukio Hirose ◽  
Zenjiro Yajima ◽  
Keisuke Tanaka
Keyword(s):  
Fracture Toughness ◽  
Residual Stress ◽  
Fracture Surface ◽  
High Strength Steel ◽  
High Strength Steels ◽  
High Strength ◽  
Line Broadening ◽  
X Ray Diffraction ◽  
Fatigue Fracture Surface ◽  
X Ray

X-ray fractography is a new method utilizing the X-ray diffraction technique to observe the fracture surface for the analysis of the micromechanisms and mechanics of fracture. The line broadening of X-ray diffraction profiles and the residual stress are two of the important X-ray parameters. Among them, the X-ray residual stress has been confirmed to be particularly useful for the fracture surfaces of high strength steels, and applied to the fracture surface of fracture toughness specimens and the fatigue fracture surface.

X-ray Fractographic Study on Alumina and Zirconia Ceramics

1990 ◽  
Vol 34 ◽  
pp. 719-727 ◽  
Author(s):  
Sumio Tanaka ◽  
Yukio Hirose ◽  
Keisuke Tanaka
Keyword(s):  
Fracture Toughness ◽  
Residual Stress ◽  
Fracture Surface ◽  
High Strength Steels ◽  
High Strength ◽  
Fatigue Tests ◽  
Fracture Mechanisms ◽  
Zirconia Ceramics ◽  
X Ray ◽  
Fractographic Study

The residual stress left on the fracture surface is one of the important parameters in X-ray fractographic study. It has been used to analyze fracture mechanisms in fracture toughness and fatigue tests especially of high strength steels.In this paper, X-ray fractography was applied to brittle fracture of alumina (Al2O3) and zirconia (ZΓO2) ceramics.

Research on Stress Calibration Technology on Aluminum of High-Speed Train Body Structure by Nondestructive X-Ray Method Measurement

2011 ◽  
Vol 189-193 ◽  
pp. 734-742
Author(s):  
Hua Ji ◽  
Hui Chen ◽  
Guo Qing Gou ◽  
Da Li ◽  
Yan Liu ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
High Speed ◽  
Stress Measurement ◽  
Diffraction Method ◽  
Welding Residual Stress ◽  
X Ray Diffraction ◽  
Ray Method ◽  
Electrometric Method ◽  
X Ray ◽  
6082 Aluminum Alloy

X-ray diffraction method has been employed to calibrate the stress of 6082 aluminum alloy which has been widely used among modern industrial products. Based on elastic tensile conditions, by designing rod sample of uniform intensity calibration (RSUIC), the stress measurement by X-ray diffraction method has been verificated by using elastic tensile theory calculation method and electrometric method. The results show that the stress measured by the tensile stress theoretical calculation, electrometric method and X-ray diffraction method was in good accordance with each other. And the matching relation between the surface stress measured by X-ray diffraction and the internal stress is investigated. The research will lay a foundation for the application of iXRD stress instrument for nondestructive measuring the welding residual stress of aluminum alloy.

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