자료유형
전체 선택해제
총 3건 검색
본문검색 결과만 보기
-
Comparative numerical evaluation for the low velocity impact behavior of T300 and T800 composite system
Jae-Seok Choi, Heung Soap Choi, Soo-Jin Park, Myung Kyun Park 한국탄소학회 Carbon Letters 7 Pages
한국탄소학회 Carbon Letters 2017, Vol.22 9 89-95 (7 pages)
and high rigidity [1]. In particular, the fuselage and wings of various aircraft, as well as the load bearing structures and components of mechanical and civil engineering systems are currently being manufactured with CFRP. However, even a low velocity impact on the carbon fiber reinforced composites can cause considerable damage, including matrix cracking, fiber failure and delamination [2-6]. These damages can result in the dramatic loss of strength and stiffness of the composites [7-9]. -
The effects of stacking sequence on the penetration-resistant behaviors of T800 carbon fiber composite plates under low-velocity impact loading
Furqan Ahmad, Jung-Wuk Hong, Heung Soap Choi, Soo-Jin Park, Myung Kyun Park 한국탄소학회 Carbon Letters 9 Pages
한국탄소학회 Carbon Letters 2015, Vol.16 No.2 6 107-115 (9 pages)
Impact damages induced by a low-velocity impact load on carbon fiber reinforced polymer (CFRP) composite plates fabricated with various stacking sequences were studied experimentally. The impact responses of the CFRP composite plates were significantly affected by the laminate stacking sequences. Three types of specimens, specifically quasi-isotropic, unidirectional, and cross-ply, were tested by a constant impact carrying the same impact energy level. An impact load of 3.44 kg, corresponding to... -
Cohesive Zone Model을 이용한 압입자 형상에 따른 균열특성분석
현홍철, 이진행, 이형일, 김대현, 한준희, Hyun. Hong Chul, Lee. Jin Haeng, Lee. Hyungyil, Kim. Dae Hyun, Hahn. Jun Hee 대한기계학회 大韓機械學會論文集. Transactions of the Korean Society of mechanical engineers. A. A 11 Pages
대한기계학회 大韓機械學會論文集. Transactions of the Korean Society of mechanical engineers. A. A 2013, Vol.37 No.12 1453-1463 (11 pages)
본 연구에서는 유한요소해석과 압입시험으로 압입자 형상이 압입균열특성에 미치는 영향을 조사했다. 본 논문에서는 Lee 등(2012)이 제시한 cohesive zone 모델특성 및 균열생성, 진전을 위한 해석조건에 기초해 다양한 균열해석을 수행했다. 우선, 사각뿔 및 삼각뿔 압입균열 시험과 해석을 비교해 해석모델의 유효성을 검증했다. 아울러 비대칭 압입자에 의한 압입시, 압입하부에서 비대칭 균열의 발생여부를 해석적으로 관찰했다. 최종적으로 압입발생 균열수와 균열길이 관계를 조사했다. 균열수와 균열길이 관계 및 동일...
