|
Residual stress distributions for two types of laser-welded lap joints with different welding directions can be found using finite element method , indicating that the maximum tensile residual stress is identical to the order of yield strength .
((1) 서로 다른 ìš©ì ‘ 방향들과 함께 ë ˆì´ì ¸ ìš©ì ‘ëœ ê²¹ì´
|
|
|
stress)
Ⅱ압축 ì‘ë ¥(壓縮應力, compressive stress)
â…¢ì „ë‹¨ ì‘ë ¥(剪斷應力, shearing stress)
Ⅳ비틀림 ì‘ë ¥(- 應力, torsional stress)
Ⅴ휨 ì‘ë ¥(-應力, bending stress)
Ⅵ수ì§ì‘ë ¥(垂直應力, normal stress)
Ⅶ잔류 ì‘ë ¥(殘留應力, Residual Stress)
â…§í•ê³µê¸°ì— ìž‘ìš©
|
|
|
stress)
Ⅱ압축 ì‘ë ¥(壓縮應力, compressive stress)
â…¢ì „ë‹¨ ì‘ë ¥(剪斷應力, shearing stress)
Ⅳ비틀림 ì‘ë ¥(- 應力, torsional stress)
Ⅴ휨 ì‘ë ¥(-應力, bending stress)
Ⅵ수ì§ì‘ë ¥(垂直應力, normal stress)
Ⅶ잔류 ì‘ë ¥(殘留應力, Residual Stress)
⧉ë³´(Beam)
â…
|
|
|
Residual Stress in Si3N4 to Metal Jointsâ€, Quartly Journal of the J.W.S., Vol.7, No,2, pp.109-116.
(14) Sung-in Moon & Jyong-sik Jang, 1997, "A study of the impact properties of surface modified UHMPE-fiber/vinylester composites", Composite Science and Technology, Vol. 57, pp. 197-203.
(15) Chan C.
|
|
|
6.3.5 Relaxation of residual stresses
(잔류 ì‘ë ¥ì˜ ì´ì™„)
@ ê°€ê³µì— í¬ê²Œ ì˜í–¥ì„ 미치는 ìƒë‹¹ížˆ í° ìˆ˜ì˜ ì „ìœ„ê°€ 있는 í‘œë©´ì¸µì€ íŠ¹ë³„ížˆ ê³ ì˜¨ì—ì„œ ì—´ì—í•™ì 으로 ë¶ˆì•ˆì „í•¨
@ ê·¸ ë¶ˆì•ˆì „í•œ ìƒíƒœëŠ” 주로 ê²°ì •ì§ˆêµ¬ì¡°ì˜ ë³€í™”ì™€ ì—너지 í‰í˜•ì„ êµëž€í•˜ëŠ”ë°ì—
|
|
 |
ìŠ¤íŠ¸ë ˆìŠ¤ ê°ì†Œì‹œí‚´
â‘¡ 반좌위 : 횡격막 하강 → í 확장, 환기ì¦ì§„, ì •ë§¥ê·€í™˜ëŸ‰ ê°ì†Œ → í울혈 예방
â‘¢ 대변 ì™„í™”ì œ 사용 : 변비로 ì¸í•œ 긴장 해소
â‘£ ì†ŒëŸ‰ì˜ ë¶€ë“œëŸ¬ìš´ ìŒì‹ ì„ì·¨ : 첫 48시간 ìœ ë™ì‹, ê·¸ 후 ì—°ì‹(6회/ì¼)/ ì €ì—¼ì‹ì´/ 뜨ê²ê±°ë‚˜ ì°¬
|
|
메뉴펼치기
