Chapter 20
Experiment Research on Tensile Process
of Glass Fiber Reinforced Plastics Basing
on AE
Hui Luo, Wenchao Han, Yilin Yuan, Bo Ke, and Baodi Zhao
Abstract In this chapter, the tensile test has been carried out with three kinds of
specimens, matrix specimen, and GFRP specimen (90°, 0°). Two AE sensors (VS150)
were located at the end of the specimen, and one sensor (VS 900) was located in
the middle of the specimen. At the same time acoustic emission equipment has
been applied throughout the whole acquisition process of various emission signals.
Amplitude, count, energy, duration, frequency distribution and other parameters as
well as waveforms are analyzed to get the characteristic of fiber breakage. Frequency
value of AE signals released by fiber breakage is between 100 and 400 kHz, duration
is between 0.5 and 100 ms, and the amplitude is more than 80 dB. AE signals
characteristics can provide a reliable reference for the study of the AE techniques in
GFRP damage mechanism and relevant performance evaluation.
20.1 Introduction
Compared with metal materials, glass fiber reinforced plastics (GFRP) offer certain
advantage in density, specific strength, good processability, corrosion resistance,
and cheap price. With these advantages, GFRP has been widely used in the fields
of aerospace, vehicle-making and pressure vessels. In recent years, tuber trailers
assembled from glass fiber reinforced cylinders with large water capacity has a water
capacity of 31.02 m
3 , which lead to a 20% increase of transport efficiency and a 30%
reduce of cost.
Affected by impact, wear damage, aging, etc., damage forms such as matrix
cracking, fiber fracture, delamination, debebonding and others are easy to occur
in the use of glass fiber reinforced large volume cylinders. Compared with metal
material, damage modes are more complicated and simultaneous, and the internal
damage in GFRP is often difficult to detect by visual inspection. Among these damage
modes of f GFRP, fiber fracture has the greatest impact on the safety performance of
H. Luo (B) · W. Han · Y. Yuan · B. Ke · B. Zhao
China Special Equipment Inspection and Research Institute, Beijing 100013, China
e-mail: luohui@csei.org.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_20
223
Experiment Research on Tensile Process
of Glass Fiber Reinforced Plastics Basing
on AE
Hui Luo, Wenchao Han, Yilin Yuan, Bo Ke, and Baodi Zhao
Abstract In this chapter, the tensile test has been carried out with three kinds of
specimens, matrix specimen, and GFRP specimen (90°, 0°). Two AE sensors (VS150)
were located at the end of the specimen, and one sensor (VS 900) was located in
the middle of the specimen. At the same time acoustic emission equipment has
been applied throughout the whole acquisition process of various emission signals.
Amplitude, count, energy, duration, frequency distribution and other parameters as
well as waveforms are analyzed to get the characteristic of fiber breakage. Frequency
value of AE signals released by fiber breakage is between 100 and 400 kHz, duration
is between 0.5 and 100 ms, and the amplitude is more than 80 dB. AE signals
characteristics can provide a reliable reference for the study of the AE techniques in
GFRP damage mechanism and relevant performance evaluation.
20.1 Introduction
Compared with metal materials, glass fiber reinforced plastics (GFRP) offer certain
advantage in density, specific strength, good processability, corrosion resistance,
and cheap price. With these advantages, GFRP has been widely used in the fields
of aerospace, vehicle-making and pressure vessels. In recent years, tuber trailers
assembled from glass fiber reinforced cylinders with large water capacity has a water
capacity of 31.02 m
3 , which lead to a 20% increase of transport efficiency and a 30%
reduce of cost.
Affected by impact, wear damage, aging, etc., damage forms such as matrix
cracking, fiber fracture, delamination, debebonding and others are easy to occur
in the use of glass fiber reinforced large volume cylinders. Compared with metal
material, damage modes are more complicated and simultaneous, and the internal
damage in GFRP is often difficult to detect by visual inspection. Among these damage
modes of f GFRP, fiber fracture has the greatest impact on the safety performance of
H. Luo (B) · W. Han · Y. Yuan · B. Ke · B. Zhao
China Special Equipment Inspection and Research Institute, Beijing 100013, China
e-mail: luohui@csei.org.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_20
223