Chapter 42
Damage Localization of Debris Cloud
Hypervelocity Impact Based on Acoustic
Emission
Kai Zhang, Runqiang Chi, and Baojun Pang
Abstract With the increase of the human aerospace activities, space debris environment is seriously threatening on-orbit spacecraft safe operation. It is necessary
to monitor the occurrence and location of impact. In this paper, two stage light gas
gun is used for launching spherical projectile to impact on double-layer plates. The
projectile penetrates the front plate to form debris cloud, and the debris cloud further
impact the rear plate. Ultrasound sensors are used to gain impact signals on the rear
plate. According to the morphology of debris cloud, the damage center are located by
the conventional triangulation technique. Unlike single-point impact, debris cloud
impact is a sequence of impacts by multiple particles in a short time, the impact
damage is a certain area. As the initial velocity increases, the impact area becomes
larger. The characteristics of the acoustic emission (AE) signals are analyzed by using
wavelet packet technology and energy entropy principle. A characteristic parameter
related to the impact area is constructed. An empirical formula for predicting the
damage diameter is established by using exponential fitting method.
42.1 Introduction
With the increase of human activities in space exploration, the number of space
debris in low earth orbit is increasing. The collision velocity between space debris
and spacecraft belongs to the category of HVI. In low earth orbit, the average collision
velocity is about 10 km/s. When the space debris size is in the range of 1–10 mm, the
spacecraft may be penetrated. With the debris size increases, the impact even causes
the spacecraft to disintegrate. In reality, long-term manned spacecraft is unavoidable
K. Zhang (B)
Changshu Institute of Technology, Changshu 215500, China
e-mail: bluerobbin@163.com
Dalian University of Technology Changshu Research Institute Co., Ltd, Changshu 215500, China
R. Chi · B. Pang (B)
Harbin Institute of Technology, Harbin 150001, China
e-mail: pangbj@hit.edu.cn
© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2021
G. Shen et al. (eds.), Advances in Acoustic Emission Technology, Springer Proceedings
in Physics 259, https://doi.org/10.1007/978-981-15-9837-1_42
475
Damage Localization of Debris Cloud
Hypervelocity Impact Based on Acoustic
Emission
Kai Zhang, Runqiang Chi, and Baojun Pang
Abstract With the increase of the human aerospace activities, space debris environment is seriously threatening on-orbit spacecraft safe operation. It is necessary
to monitor the occurrence and location of impact. In this paper, two stage light gas
gun is used for launching spherical projectile to impact on double-layer plates. The
projectile penetrates the front plate to form debris cloud, and the debris cloud further
impact the rear plate. Ultrasound sensors are used to gain impact signals on the rear
plate. According to the morphology of debris cloud, the damage center are located by
the conventional triangulation technique. Unlike single-point impact, debris cloud
impact is a sequence of impacts by multiple particles in a short time, the impact
damage is a certain area. As the initial velocity increases, the impact area becomes
larger. The characteristics of the acoustic emission (AE) signals are analyzed by using
wavelet packet technology and energy entropy principle. A characteristic parameter
related to the impact area is constructed. An empirical formula for predicting the
damage diameter is established by using exponential fitting method.
42.1 Introduction
With the increase of human activities in space exploration, the number of space
debris in low earth orbit is increasing. The collision velocity between space debris
and spacecraft belongs to the category of HVI. In low earth orbit, the average collision
velocity is about 10 km/s. When the space debris size is in the range of 1–10 mm, the
spacecraft may be penetrated. With the debris size increases, the impact even causes
the spacecraft to disintegrate. In reality, long-term manned spacecraft is unavoidable
K. Zhang (B)
Changshu Institute of Technology, Changshu 215500, China
e-mail: bluerobbin@163.com
Dalian University of Technology Changshu Research Institute Co., Ltd, Changshu 215500, China
R. Chi · B. Pang (B)
Harbin Institute of Technology, Harbin 150001, China
e-mail: pangbj@hit.edu.cn
© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2021
G. Shen et al. (eds.), Advances in Acoustic Emission Technology, Springer Proceedings
in Physics 259, https://doi.org/10.1007/978-981-15-9837-1_42
475