Application of Synchrotron Radiation to Residual Stress Analysis by IP/cosα Method

2008 ◽  
Vol 571-572 ◽  
pp. 249-254 ◽  
Author(s):  
Toshihiko Sasaki ◽  
Yohei Miyazawa ◽  
Shunichi Takahashi ◽  
Ryohei Matsuyama ◽  
Katsunari Sasaki ◽  
...  
Keyword(s):  
Residual Stress ◽  
Synchrotron Radiation ◽  
Stress Analysis ◽  
Stress Measurement ◽  
High Energy ◽  
Ray Method ◽  
X Ray ◽  
High Energy Accelerator ◽  
Diffraction Angle ◽  
Residual Stress Analysis

The X-ray stress measurement with synchrotron radiation (SR) and an image plate (IP) was conducted using the facility of the Photon Factory (PF) of the High Energy Accelerator Research Organization (KEK). The influence of 2θ on stress measurement with the cosα method was investigated. The experiments were conducted under the conditions of 2θ=170 deg, 156.4 deg and 127 deg respectively. It was found that the hypothesis on the relation between the accuracy and the diffraction angle in the X-ray method is not valid in case of the cosα method.

X-ray Residual Stress Analysis of Zn-Ni Alloy Electroplating Layers

1989 ◽  
Vol 33 ◽  
pp. 171-175
Author(s):  
Toshihiko Sasaki ◽  
Makoto Kuramoto ◽  
Yasuo Yoshioka
Keyword(s):  
Residual Stress ◽  
Corrosion Resistance ◽  
Stress Analysis ◽  
Stress Measurement ◽  
Thin Layers ◽  
High Corrosion Resistance ◽  
Ray Method ◽  
X Ray ◽  
Ni Alloy ◽  
Residual Stress Analysis

Zn-Ni-alloy electroplated steels are one of the surface-treated materials with a high corrosion resistance and are mostly used for automobiles. It is said that the corrosion resistance is more than four times as great as that of Zn-plated steels. Concerning x-ray stress measurement, Kyono et al reported the result of measurement on y (552) planes and showed that the sin2φ diagram was severely curved.X-ray stress analysis in surface-treated materials will become more important. Some problems, however, remain to be studied when we apply the x-ray method to thin layers. For example, the effective x-ray penetration depth may be different from that in ordinary materials. And complex gradients of stresses and compositions may exist.

X-Ray Residual Stress Analysis of Stainless Steel Using cosα Method

2014 ◽  
Vol 922 ◽  
pp. 167-172 ◽  
Author(s):  
Toshihiko Sasaki ◽  
Kei Koda ◽  
Yohei Fujimoto ◽  
Shoichi Ejiri ◽  
Tamaki Suzuki ◽  
...  
Keyword(s):  
Residual Stress ◽  
Stainless Steel ◽  
Stress Analysis ◽  
Power Plants ◽  
Detection Method ◽  
Stress Measurement ◽  
Image Data ◽  
X Ray ◽  
Debye Ring ◽  
Residual Stress Analysis

This paper shows X-ray residual stress analysis of stainless steel using 2-dimensional detection method. The 2-dimensional detection method of X-ray stress measurement will determine stress by conducting a 2-dimensional detecting of a Debye ring and analyzing the image data. The basic of typical austenitic stainless steel (JIS SUS304) was studied in this study, considering the fact that, at certain power plants, maintenance takes place to prevent stress corrosion cracking by adding compressive residual stress to the structure..

X-Ray Residual Stress Analysis of Nickel Base Alloys

2014 ◽  
Vol 922 ◽  
pp. 274-279 ◽  
Author(s):  
Toshihiko Sasaki ◽  
Toshiyuki Miyazaki ◽  
Hamiru Ito ◽  
Takashi Furukawa ◽  
Tsuyoshi Mihara
Keyword(s):  
Residual Stress ◽  
Stress Analysis ◽  
Nuclear Power ◽  
Power Plants ◽  
Ray Method ◽  
X Ray ◽  
Stress Measurements ◽  
Residual Stress Analysis ◽  
Nickel Base ◽  
Steam Generator Tubes

Nickel based alloys are widely used in steam generator tubes for nuclear power plants. 1-D X-ray stress measurements have been used for these alloys. But 1-D method requires large equipment and it is practically impossible to measure stress in power plants. In order to overcome this problem, we adopted 2-D X-ray method which requires significantly smaller equipment. In this paper we report preliminary results of 2-D X-ray stress measurements of nickel based alloys.

Oxford HEXameter: Laboratory High Energy X-Ray Diffractometer for Bulk Residual Stress Analysis

2006 ◽  
pp. 743-748 ◽  
Author(s):  
Alexander M. Korsunsky ◽  
Shu Yan Zhang ◽  
Daniele Dini ◽  
Willem J.J. Vorster ◽  
Jian Liu
Keyword(s):  
Residual Stress ◽  
Stress Analysis ◽  
High Energy ◽  
X Ray ◽  
Residual Stress Analysis

Residual Stress Analysis in Steels Having Preferred Orientation by Use of Synchrotron Radiation Source

1987 ◽  
Vol 31 ◽  
pp. 213-222
Author(s):  
Yasuo Yoshioka ◽  
Hisaaki Matsui
Keyword(s):  
Residual Stress ◽  
Synchrotron Radiation ◽  
Stress Analysis ◽  
Wave Length ◽  
High Accuracy ◽  
Preferred Orientation ◽  
Bragg Angle ◽  
Diffraction Plane ◽  
X Ray ◽  
Residual Stress Analysis

In the field of X-ray stress analysis, a diffraction plane at a high Bragg angle region has to be selected in order to determine the precise value of stress. But stress analysis using a most desired (hkl)- plane is not always possible. The use of synchrotron radiation (SR) enables the stress analysis using many (hkl)-planes with high accuracy by providing a perfectly monochromaticed X-ray beam having an optional wave length. Such features of SR ate most suitable for the stress analysis on materials having preferred orientation.

The Experimental Study of Diffraction Angle of Aluminum Alloy 3003

2012 ◽  
Vol 625 ◽  
pp. 291-296
Author(s):  
Neng Quan Duan ◽  
Jian Liang Ren ◽  
Rui Qiang Pang
Keyword(s):  
Residual Stress ◽  
Aluminum Alloy ◽  
Stress Measurement ◽  
Electrical Measuring ◽  
Diffraction Method ◽  
Measuring Method ◽  
X Ray ◽  
Equal Strength ◽  
Diffraction Angle ◽  
Stress Measuring

The most suitable diffraction angle of aluminum alloy 3003 used for stress measuring is aimed to be determined in this paper. The experiment makes a stress measurement of a loading aluminum alloy 3003 equal strength beam with the traditional electrical measuring method and the X-ray stress measurement. With the electrical measuring method as reference, the research study the measured values that acquired from the X-ray diffraction method when the diffraction angle are 142° and 156°, and then compare them with that acquired from electrical measuring method. The measurement results demonstrate that the diffraction angle at 156 ° is better than at 142 ° based on the assessment standards of the liner slope and the distribution of data. Thus the optimum diffraction angle for X-ray to measure the macroscopic stress of aluminum alloy 3003 is 156 °. In this paper，the stress caused by the load on the equal strength beam is assumed to be "residual stress" and thus the conclusion has reference values for the standardization of residual stress measurement of aluminum alloy by XRD and has theoretical guiding significance in the production practices.

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