公开(公告)号：US07985370B2

公开(公告)日：2011-07-26

申请号：US12325726

申请日：2008-12-01

Applicant: Bo Young Lee ,  Jae Seong Kim ,  Woong Ki Hwang

Inventor： Bo Young Lee ,  Jae Seong Kim ,  Woong Ki Hwang

IPC: G01N3/32

CPC classification number: G01N3/60 ,  G01N2203/0062

Abstract: An apparatus for forming longitudinal thermal fatigue cracks. A heating unit has an induction coil disposed adjacent to an outer circumference of one side of a tubular test piece, on an inner surface of which a notch is formed. A cooling unit has a cooling water pump and a cooling water hose which forcibly injects cooling water from a cooling water storage source into an inner circumference of the tubular test piece. A control unit controls operation of the heating and cooling units. A cooling block partially encloses the outer circumference of the tubular test piece so as to control a magnitude of y-axial stress, is supplied with a cooling source of fluid or gas from an outside so as to repetitively cool the tubular test piece heated by the heating unit to adjust a temperature gradient, and has a longitudinal slit for controlling crack positions.

Abstract translation: 一种用于形成纵向热疲劳裂纹的装置。 加热单元具有与管状试验片的一侧的外周相邻配置的感应线圈，其内表面形成有切口。 冷却单元具有冷却水泵和冷却水软管，其将冷却水从冷却水存储源强制地注入到管状试验片的内周。 控制单元控制加热和冷却单元的操作。 冷却块部分地包围管状试件的外周，以便控制y轴向应力的大小，从外部向流体或气体供给冷却源，以便重复地冷却由 加热单元来调节温度梯度，并且具有用于控制裂纹位置的纵向狭缝。