A Scanning Acoustic Microscope ( SAM) can be used to detect package delaminations and quickly identify the failure cause at the early stage of failure analysis. 扫描声学显微镜可以用来检测封装分层,能在失效分析的早期阶段快速地鉴别失效原因。
Free vibration characteristic of plain woven fabric laminates with multiple delaminations 含多分层损伤平面编织层合板的振动特性
Theoretical Study on the Propagating Characteristics of Surface Acoustic Waves in Layered Structures Free vibration characteristic of plain woven fabric laminates with multiple delaminations around a central hole 多层结构声表面波传播特性的理论研究含穿孔-多分层混合损伤平面编织层合板自振特性
The effect of crack distance and fiber angle on delaminations in laminated composites 裂纹间距及铺层角度对复合材料分层的影响
ELASTICITY SOLUTION OF SIMPLE-SUPPORTED COMPOSITE BEAMS WITH DELAMINATIONS Analysis of Compression Modulus of Resilience of Slab-Type Rubber Seat of Bridge 桥梁板式橡胶支座抗压弹性模量分析
Analysis for interior forces of statically indeterminate structures with elastic bearings ELASTICITY SOLUTION OF SIMPLE-SUPPORTED COMPOSITE BEAMS WITH DELAMINATIONS 含有弹性支承超静定结构的内力分析
Association of Perforin and Granzyme B Gene Single Nucleotide Polymorphisms and Juvenile Idiopathic Arthritis Free vibration characteristic of plain woven fabric laminates with multiple delaminations around a central hole 穿孔素和颗粒酶B基因多态性与幼年特发性关节炎相关性分析含穿孔-多分层混合损伤平面编织层合板自振特性
Using LLW setup and a C-scan system, defects in composite laminates suchas delaminations and porosities were successfully detected. 采用泄漏兰姆波C扫描技术,可成功地检出复合材料层板中的分层及孔隙等缺陷。
Thirdly, delaminations were modeled by pairs of nodes with the same coordinates but different node numbers, while the modal frequencies of these beams with different delamination location and size were computed by an EAS piezoelectric solid element. 利用坐标相同、节点号不同的方法模拟脱层损伤,基于EAS列式的压电固体单元计算了不同脱层损伤情况下的频率信息;
Thirdly, buckling model for plates with built-in circular or elliptic delaminations is established by employing Rayleigh-Ritz method. 用瑞里&李兹方法建立了含内埋圆形或椭圆形脱层板的屈曲分析模型。
This paper also sorts, delaminations and groups these guideline in order to make it reflect the status of the grid operation. 并且,科学、合理地对评价指标进行分类、分层、分组,使该指标体系能清晰地从不同侧面和不同层次反映输电网经营运行状况。
Study on Free Vibration Characteristics for Composite Laminates and Stiffened Plates with Multiple Delaminations 含多分层复合材料层合板和加筋板的自由振动特性研究
Research on post-buckling of laminated composite panel with single delaminations 含单个分层复合材料层合板后屈曲性态研究
Nondestructive Testing Techniques for Detecting Delaminations and Debondings of Composites 复合材料脱粘和分层的无损检测技术
Advances in the studies on delaminations buckling and growth of axial-compression laminate 轴压层合结构脱层屈曲及其扩展研究进展
Study of energy release rate of composite laminate with symmetric edge delaminations considering geometric nonlinearity 大变形下对称自由边分层复合材料的能量释放率研究
The experimental results show that the ply sequences play a significant role in laminated composite material properties and delaminations have a significantly effect on dynamic pulse response of laminated beams. 实验结果表明铺层角度是决定材料性能的主要原因,脱层损伤的存在及大小对动力响应和发生动力屈曲有重要影响。
Buckling analysis of composite laminates with built-in circular or elliptical delaminations 含内埋圆形或椭圆形脱层复合材料层合板的屈曲分析
Obvious gravity segregation and delaminations microstructure are found in the alloy obtained in undercooling range of 174K and 204K. 在174~204K的过冷度区间内,组织出现明显分层。
The fracture mechanics feature of elliptical delaminations in a composite laminate is studied. 对复合材料层板中椭圆分层的断裂力学问题进行了研究。
Nondestructive evaluation of delaminations and voids in axis-symmetric CFRP shells: scope and limitation of tangential X-ray radiography 轴对称碳纤维增强塑料管中分层和孔隙的无损检测评定&切向X射线照相的适用范围及局限性
The laminate sections parallel to the boundary of delamination area can be regarded as laminated beams with delaminations, the displacements of which can be expressed by the analytical solutions of additional displacements in the above beams. 进而在层板分层区中切取平行于边界的切片,将切片视为含分层的层合梁,其位移模态以相应层合梁的附加位移模态来表示。
The influence of length, depth and position of the delaminations and ply orientation of the material on buckling load is analyzed. 分析了脱层长度、深度、位置和材料的铺层方向对脱层梁屈曲载荷的影响;
Then, buckling characteristic equations for laminates with built-in circular or elliptical delaminations are derived by using the variational principle and linearized method. 然后由变分原理并进行线性化得出了含内埋圆形或椭圆形脱层板的屈曲特征方程。
The emphasis of this paper is to establish the buckling model of composite laminated structures with built-in delaminations. The three-dimensional analytic model on laminated piezoelectric shells is also studied. 本文研究工作的重点是建立含内埋脱层的复合材料层合结构的屈曲分析模型,其次是建立压电层合壳的三维分析模型。
The occurrence of delaminations and their further growth can weaken the stiffness and strength of structure, which will change the structural static and dynamic characteristics. 脱层的出现及其进一步扩展可降低结构的强度和刚度,从而改变结构的静、动力学性能。