Nondestructive evaluation techniques have been used to evaluate the integrity of bolted joints in structures. One such method is nonlinear wave modulation spectroscopy (NWMS), which examines the sideband generation in the presence of dual inputs as a result of nonlinearity present in the system. This work uses NWMS on an aluminum T-joint structure to evaluate the torque levels of the bolts. In addition, this work compares excitation with two shakers to excitation with a single shaker and an impact hammer, in which the hammer excites several low frequency modes. The results show that the damage indicator based on the sidebands is highly dependent on damage and sensor location, and that the damage indicator is most sensitive over a specific range of torque levels.
|Title of host publication
|45th Annual Review of Progress in Quantitative Nondestructive Evaluation, Volume 38
|Simon Laflamme, Stephen Holland, Leonard J. Bond
|American Institute of Physics Inc.
|Published - May 8 2019
|45th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE 2018 - Burlington, United States
Duration: Jul 15 2018 → Jul 19 2018
|AIP Conference Proceedings
|45th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE 2018
|7/15/18 → 7/19/18
All Science Journal Classification (ASJC) codes
- Ecology, Evolution, Behavior and Systematics
- Plant Science
- Physics and Astronomy(all)
- Nature and Landscape Conservation