국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Application of Newly Developed X-Ray Stress Measurement Equipment for High Temperature Environment
저자	Yoshio AOKI, Shin-ich OHYA
Keyword	X-ray stress analysis; Thermal shock test; Single exposure technique; Actual stress; Residual stress; Carbon/Carbon Composite; FGM coating
URL	http://send.nal.go.jp/send/jpn/dlpdf.php3/naltr0001400.pdf?id=NALTR0001400
보고서번호	NAL TR-1400
발행년도	2000.01
출처	NAL (National Aerospace Laboratory of Japan)
ABSTRACT	Carbon-carbon composites coated by silicon carbide have been planned for use as the material for thermal protection structures of the spaceplane. To evaluate the high temperature strength characteristics of these materials, it is necessary to measure the stress induced by repeated thermal shock at the boundary of the coating layer or by connecting these composites with primary metal structures, and the major focus was speeding up the X-ray stress measurement. The point of improvement for the speedup was to measure two positive and negative diffraction profiles of X-ray injection angle by means of two detectors using PSPC type tubes. This speedup was also achieved by integrating the heating equipments with a stress analyzer, and by developing the software to control the system accurately and collect the measurement data. This is improvement enabled stress measurement under transient phenomena during heating