Research Institute of Highway Ministry of Transport

Railway Engineering Research Institute, China Academy of Railway Sciences Co., Ltd.

China Academy of Railway Sciences Co., Ltd.

Xiaobing Li

Jian Li

Bo Liu

Lei Zhang

Tao Jia

Zehua Dong

Yong Yao

Yu Cheng

Jian Cui

Yufang Zhang

Kun Yuan

Jiawei Fan

Hongbo Guo

Pan Chen

Tao Wei

Gongming Chen

Wenchao Zhang

Genqiang Jing

Yingchao Luo

Qihao Yin

Lining Du

Shuangquan Lei

Shiwen Huang

Hao Lan

Shengyong Zeng

Fei Xian

Wenxin Tan

Ning Xuan

Junjie Zeng

Provided are a system and a method for impact testing and monitoring of a high-energy flexible net. The system includes a vertical impact testing unit, a slope impact testing unit, an impact simulation unit, and an impact monitoring unit. The vertical impact testing unit includes a vertically positioned gravity wall. The slope impact testing unit includes a wall slope positioned perpendicularly to a second side of the gravity wall. A first side of the gravity wall and a slope surface of the wall slope are securely provided with a flexible net, respectively. The impact simulation unit includes an impact assembly and a lifting assembly. The impact monitoring unit is configured to monitor a deformation result and an internal force change result of the flexible net.

Systems and methods for impact testing and monitoring of high-energy flexible nets

The disclosed are a deflection calibration apparatus and method for a laser type high-speed deflection tester. The apparatus comprises rigid supports, rotating discs, driving systems and a deflection calibration unit; the rotating discs are mounted on the rigid supports and driven by the driving systems to rotate, and upper surfaces of the rotating discs are processed into inclined planes having a slope in the circumferential direction; the deflection calibration unit is used for calibrating a laser type high-speed deflection tester according to measured and theoretical deflection values; laser emitted by a Laser-Doppler vibrometer is incident on the upper surfaces of the rotating discs to obtain the measured deflection value; the deflection calibration unit calculates the theoretical deflection value according to the inclination angle and the rotational angular velocity of each rotating disc and the distance between a laser incident point and the gyration center of each rotating disc.

Deflection calibration apparatus and method for laser type high-speed deflection tester

Growing community of inventors

Beijing, China

Xiaobing Li