http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : A. Rajabloo (검색결과 1 건)
- 무료
- 기관 내 무료
- 유료
-
A. Rajabloo,H. Gorji,M. Bakhshi‑Jooybari 대한금속·재료학회 2022 METALS AND MATERIALS International Vol.28 No.7
A new method based on the EMF ring expansion test has been suggested for determining the dynamic characteristics ofannealed and as-received aluminum 1050 H18 sheet. The proposed method does not need any expensive hardware or datacollector. After performing quasi-static (QS) tensile tests, two coils and three sets of rings were prepared. The rings wereexpanded by coils at different voltages, and the strains induced were measured using 2D scanners. An inverse modelingalgorithm was used as a tool to determine the strain rate hardening coefficient by minimizing the difference between experimentallymeasured strain and that calculated from FEM simulation. The obtained strain-rate hardening coefficient of thematerial shows that annealed aluminum 1050 sheet is sensitive to strain rate, whereas the as-received is not. The obtainedresults showed that the as-received aluminum 1050 sheet depicts brittle failure behavior in both QS tensile test and high strainrate ring expansion test, but the annealed one withstands strains above 0.25 at both mentioned strain rates. The proposedmethod is successful in determining the flow curve of the material in sheet forming at high strain rates.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
