公开(公告)号：KR100920102B1

公开(公告)日：2009-10-01

申请号：KR1020080107558

申请日：2008-10-31

Applicant: 한국항공대학교산학협력단

Inventor： 이보영 ,  김재성 ,  황웅기

IPC: G01N25/02 ,  G01N25/00

CPC classification number: G01N3/60 ,  G01N2203/0062

Abstract: PURPOSE: A longitudinal thermal-fatigue crack forming apparatus is provided to form a longitudinal crack by using a cooling block for longitudinally controlling the formation direction of a thermal-fatigue crack. CONSTITUTION: A longitudinal thermal-fatigue crack forming apparatus comprises a heating unit, a cooling unit, a control unit, and a cooling block. A heating unit(20) comprises a coil arranged to be adjacent to a tube-shaped specimen in the columnar direction. The cooling unit comprises a cooling water pump and a cooling water hose. The control unit controls the operation of the heating unit and the cooling unit. The cooling block is contacted with outer circumference part of the tube-shaped specimen. A crack position adjusting slit(51c) is formed in the longitudinal direction in the cooling block. A cooling water line(51a) in which cooling source composed of cooling water or the cooling gas circulates is connected to a cooler controlled by the cooling temperature controller and is formed inside the cooling block.

Abstract translation: 目的：通过使用用于纵向控制热疲劳裂纹的形成方向的冷却块来提供纵向热疲劳裂纹形成装置以形成纵向裂纹。 构成：纵向热疲劳裂纹形成装置包括加热单元，冷却单元，控制单元和冷却块。 加热单元（20）包括在柱状方向上与管状样本相邻的线圈。 冷却单元包括冷却水泵和冷却水软管。 控制单元控制加热单元和冷却单元的操作。 冷却块与管状试样的外周部接触。 在冷却块中沿长度方向形成裂缝位置调整狭缝51c。 由冷却水或冷却气体构成的冷却源循环的冷却水管路（51a）与由冷却温度控制器控制的冷却器连接，形成在冷却块的内部。