公开(公告)号：US20110094307A1

公开(公告)日：2011-04-28

申请号：US12747758

申请日：2008-10-31

申请人： Chang Sung Seok ,  Sung Keun Cho ,  Haeng Cheol Cho ,  Kwang Sang Seon ,  Kwang Hyeon Lee ,  Soo Park

发明人： Chang Sung Seok ,  Sung Keun Cho ,  Haeng Cheol Cho ,  Kwang Sang Seon ,  Kwang Hyeon Lee ,  Soo Park

IPC分类号： G01N3/20

CPC分类号： G01N3/20 ,  G01N3/04 ,  G01N2203/027 ,  G01N2203/0274

摘要： A compact pipe specimen applicable to a fracture toughness test used to evaluate physical properties of a pipe material is provided. The compact pipe specimen includes: a pipe having a notch portion formed in a circumferential direction and a crack portion formed at the edge of the notch portion; and first and second jigs having openings to which a pressurizing unit is coupled so as to cause a bending load on the pipe, having the notch portion therebetween, and attached to the exterior surface of the pipe, respectively. It is unnecessary to correct the influence of a constraint effect due to varying sizes and shapes of the specimen. There is no restriction to the curvature and thickness of a pipe. A fracture behavior of a pipe crack portion can be precisely simulated.

摘要翻译： 提供适用于用于评价管材的物理性能的断裂韧性试验的紧凑型管材试样。 紧凑型管试样包括：具有沿圆周方向形成的切口部分和形成在切口部分的边缘处的裂纹部分的管; 以及具有开口的第一和第二夹具，加压单元联接到所述开口上，以便在所述管上产生弯曲载荷，所述弯曲载荷在所述管之间具有所述切口部分，并且分别附接到所述管的外表面。 由于样本的大小和形状的变化，不必修正约束效应的影响。 对管道的曲率和厚度没有限制。 可以精确模拟管道裂纹部分的断裂行为。