TY  - JOUR
A1  - Heimann, Jan
A1  - Mustapha, Samir
A1  - Yilmaz, Bengisu
A1  - Prager, Jens
T1  - Guided Waves in Composite Overwrapped Pressure Vessels and Considerations for Sensor Placement Toward Structural Health Monitoring—An Experimental Study
JF  - Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems
N2  - The utilization of composite overwrapped pressure vessels (COPVs) to store hydrogen, especially at high pressures, is gaining more popularity due to their lightweight design and high storage density, offering significant economic advantages. However, the presence of material defects or fatigue can lead to critical failures, requiring an innovative and robust approach to ensure safe operation and system integrity. Developing a continuous structural health monitoring (SHM) system for COPVs can provide comprehensive realtime information about their condition, facilitating a shift away from periodic inspections.
This study scrutinizes the behavior of guided waves (GWs) within COPVs to design a sensor ,network for damage detection and localization. First, the dispersive and multimodal propagation behavior of GWs is experimentally investigated. Subsequently, important parameters for the network design are derived and finally a sensor network consisting of 15 piezoelectric transducers is designed to cover the entire cylindrical area. The effectiveness is then evaluated experimentally by placing artificial defects on the surface of the COPV. The multi-layered dataset of GW signals was analyzed using both commonly used ultrasonic features (e.g., amplitude, frequency, time of flight) as well as statistical features (kurtosis, skewness, variance, etc.). These features were utilized to compute a damage index, and the effectiveness of the detection performance was assessed using receiver operating characteristic curves. It can be seen that some features are more sensitive and robust under varying experimental conditions. The results show that ultrasonic GW SHM system is a promising solution for damage detection and localization in COPVs.
KW  - Composite Overwrapped Pressure Vessels
KW  - Guided Waves
KW  - Structural Health Monitoring
KW  - Sensors Placement
KW  - Damage Detection
KW  - Damage Localization
KW  - Elastic Wave
KW  - Testing Methodologies
KW  - Ultrasonics
PY  - 2025
UR  - https://nbn-resolving.org/urn:nbn:de:kobv:b43-625239
DO  - https://doi.org/10.1115/1.4067667
SN  - 2572-3898
VL  - 8
IS  - 3
SP  - 031007-1
EP  - 031007-13
PB  - The American Society of Mechanical Engineers (ASME)
CY  - New York, USA
AN  - OPUS4-62523
LA  - eng
AD  - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER  -