Measurements of strain-rate distributions on material after SHPB impact

• Autorzy: Kawai M. , Futakawa M. , Naoe T. , Yamada H. , Xu C. N.
• Języki publikacji: EN

Abstrakty

EN

We have proposed a sophisticated novel method of the SHPB experiment to measure the local strain-rate distributions on a surface of the specimen by using mechanoluminescent materials combined with a high-speed camera and an image intensi?er. The feasibility study was made for the aluminum specimens pasted by a typical mechanoluminescent material -Eu doped SrAl2O4 ?lm, in order to obtain the fundamental data for the method. Our results showed that SrAl2O4: Eu emitted lights as a response to the stress. Increase of the light intensity was swift enough to follow the strain change due to SHPB impact. The luminescence intensity was experimentally veri?ed and expressed as a product of strain and strain rate. Accordingly, it can be said that this method gives a good tool for measuring time variation of local strain distributions.

Słowa kluczowe

EN

aluminium; measurement; strain

PL

aluminium; pomiar; odkształcenie

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Engineering Transactions
• Rocznik: 2011
• Tom: Vol. 59, iss. 1
• Strony: 13--21
• Opis fizyczny: Bibliogr. 14 poz., rys., wykr.

Twórcy

autor

Kawai M.

autor

Futakawa M.

autor

Naoe T.

autor

Yamada H.

autor

Xu C. N.

• High Energy Accelerator Research Organization, Tsukuba, Japan

Bibliografia

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• 4. Y. Zhu, B. Pang, B. Gai, L. Wang and W. Zhang, Dynamic compressive behavior of 45 col.% SiCp/2024Al composite at various strain rate, ibid., 1, 155–161, 2009.
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