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Journal Articles

Prediction method of improved residual stress distribution by shot peening using large scale analysis method

Ikushima, Kazuki*; Shibahara, Masakazu*; Nishikawa, Satoru*; Furukawa, Takashi*; Akita, Koichi; Suzuki, Hiroshi; Morooka, Satoshi

E-Journal of Advanced Maintenance (Internet), 9(3), p.NT87_1 - NT87_5, 2017/11

Journal Articles

Numerical analysis of residual stress distribution on peening process

Ikushima, Kazuki*; Shibahara, Masakazu*; Akita, Koichi; Suzuki, Hiroshi; Morooka, Satoshi; Nishikawa, Satoru*; Furukawa, Takashi*

Welding in the World, 61(3), p.517 - 527, 2017/05

In this study, first, an analysis method to predict the behaviour of residual stress distribution on shot peening process was proposed. In the proposed method, the load distribution on the collision of shots was modelled, and it was integrated with the dynamic analysis method based on the idealized explicit FEM (IEFEM). The accuracy of the proposed analysis system was confirmed by comparing the stress distribution on the collision of a single shot with the results analyzed by ABAQUS. The thermal elastic plastic analysis method using IEFEM was applied to the analysis of residual stress distribution of multi-pass welded pipe joint. The calculated residual stress distribution was compared with the measured residual stress distribution using X-ray diffraction (XRD). As a result, it was shown that the both welding residual distribution agree well with each other. Considering the calculated welding residual stress distribution, the modification of stress distribution due to shot peening was predicted by the proposed analysis system. As a result, the similar stress distribution with measurement by XRD was obtained in case that a large number of collisions are considered.

Journal Articles

X-ray line profile study on shot/laser-peened stainless steel

Kumagai, Masayoshi*; Akita, Koichi; Imafuku, Muneyuki*; Oya, Shinichi*

Advanced Materials Research, 996, p.39 - 44, 2014/08

 Times Cited Count:3 Percentile:9.79

The microstructural features of shot and laser peened austenitic stainless steels were studied using line profile analysis with X-rays. Although both specimens had similar residual stress profiles toward the depth direction, the microstructural features were different not only on the original surfaces of the specimens but also to several micrometers in depth. The dislocation densities of the SP specimen were greater than that of the LP specimen. And the crystallite sizes of the SP specimen were smaller than that of the LP specimen.

Journal Articles

The Residual stress measurement of shot peened IN718 by the neutron diffraction method

Minakawa, Nobuaki; Moriai, Atsushi; Saito, Toru; Tanaka, Keisuke*; Akiniwa, Yoshiaki*; Hayashi, Makoto*; Okido, Shinobu*

Nippon Zairyo Gakkai Dai-36-Kai X Sen Zairyo Kyodo Ni Kansuru Shimpojiumu Koen Rombunshu, p.263 - 265, 2000/09

no abstracts in English

Oral presentation

Finite element analysis of stress relaxation behavior on shot peening

Kitamura, Yoshisato*; Okada, Takashi*; Ikushima, Kazuki*; Shibahara, Masakazu*; Nishikawa, Satoru*; Akita, Koichi

no journal, , 

no abstracts in English

Oral presentation

Finite element analysis of residual stress distribution on shot peening

Ikushima, Kazuki*; Kitamura, Yoshisato*; Kitani, Yuji*; Shibahara, Masakazu*; Nishikawa, Satoru*; Akita, Koichi

no journal, , 

no abstracts in English

Oral presentation

Study on residual stress reduction behavior on shot peening process

Ikushima, Kazuki*; Kitani, Yuji*; Kitamura, Yoshisato*; Shibahara, Masakazu*; Nishikawa, Satoru*; Furukawa, Takashi*; Akita, Koichi

no journal, , 

no abstracts in English

Oral presentation

Prediction modeling of the surface characteristics of shot peened stainless steel

Kuroda, Masatoshi*; Akita, Koichi; Kobayashi, Yuji*; Tsuji, Toshiya*; Shimasaki, Tomonori*

no journal, , 

no abstracts in English

Oral presentation

Study on influence of various loads on residual stress distribution of shot peened welding joint

Shibahara, Masakazu*; Kitani, Yuji*; Ikushima, Kazuki*; Nishikawa, Satoru*; Furukawa, Takashi*; Akita, Koichi; Morooka, Satoshi; Suzuki, Hiroshi

no journal, , 

no abstracts in English

Oral presentation

Evaluation of the sustainability of compressive residual stress by introduced a stress improvement method, 1; Development of analysis method of the shot peening using idealized explicit FEM

Yamada, Yusuke*; Shibahara, Masakazu*; Ikushima, Kazuki*; Kitani, Yuji*; Nishikawa, Satoru*; Furukawa, Takashi*; Akita, Koichi; Suzuki, Hiroshi; Morooka, Satoshi

no journal, , 

no abstracts in English

Oral presentation

Evaluation of the sustainability of compressive residual stress by introduced a stress improvement method, 3; Study of the relevance of shot peening analysis method by IEFEM and the sustainability of compressive residual stress

Kitani, Yuji*; Shibahara, Masakazu*; Ikushima, Kazuki*; Yamada, Yusuke*; Nishikawa, Satoru*; Furukawa, Takashi*; Akita, Koichi; Suzuki, Hiroshi; Morooka, Satoshi

no journal, , 

no abstracts in English

Oral presentation

Study of behavior to relieve residual stress at the time of the shot peening

Kitani, Yuji*; Shibahara, Masakazu*; Ikushima, Kazuki*; Yamada, Yusuke*; Nishikawa, Satoru*; Furukawa, Takashi*; Akita, Koichi; Suzuki, Hiroshi; Morooka, Satoshi

no journal, , 

no abstracts in English

Oral presentation

Numerical analysis of stress-relaxation behavior during shot-peening

Yamada, Yusuke*; Kitani, Yuji*; Ikushima, Kazuki*; Shibahara, Masakazu*; Nishikawa, Satoru*; Furukawa, Takashi*; Akita, Koichi; Suzuki, Hiroshi; Morooka, Satoshi

no journal, , 

no abstracts in English

Oral presentation

Evaluation of residual stress behaviors of reactor coolant pipe in whole process from welding and peening to operating condition; Neutron stress measurement and numerical analysis

Akita, Koichi*; Suzuki, Hiroshi; Morooka, Satoshi; Harjo, S.; Shibahara, Masakazu*; Ikushima, Kazuki*; Nishikawa, Satoru*; Furukawa, Takashi*

no journal, , 

no abstracts in English

14 (Records 1-14 displayed on this page)
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