公开(公告)号：US11408807B2

公开(公告)日：2022-08-09

申请号：US16728984

申请日：2019-12-27

Applicant: INNER MONGOLIA UNIVERSITY OF TECHNOLOGY

Inventor： Xiaoxiao Wang ,  Shuguang Liu ,  Changwang Yan ,  Heng Li

IPC: G01N3/54 ,  G01N3/18 ,  G01N3/42

Abstract: The invention provides a test device and method for controlling a low-temperature environment. A double-layer stainless steel plate forms an interlayer cavity of a cooling box; four walls of the cooling box are provided with a heat insulation plate; a probe thermometer is disposed on a side wall of the cooling box; both the top of a press and the bottom of an indenter of a universal testing machine are provided with a fiberglass reinforced plastic pipe cover; the cooling box is disposed on the press; the indenter is disposed in the cooling box through a through hole; a cold bath device communicate with the cooling box; the cold bath device and the interlayer cavity are provided with a freezing liquid; a stress-strain data acquisition instrument is connected to a sample in the cooling box through a strain gage and a strain gage connection line.