Although bonded composite patches often offer a far more effective repair than conventional
mechanically fastened patches, full credit can not be given for their effectiveness in …

This article describes the development and validation of a novel thermoelastic stress analysis
(TSA) system based on a low-cost microbolometer device. The use of a microbolometer for …

The use of infrared thermography (IRT) as a nondestructive evaluation technique is becoming
increasingly attractive for the detection of sub-surface defects in composite structures. …

The ability to predict subsurface defect information in composite materials through a non-invasive,
efficient inspection protocol is fast becoming a vital research area. In numerically …

An investigation of the feasibility of inspecting impact damage in polymer composite aircraft
components using remote line scan thermography (LST) is presented. A numerical study is …

A new capability for automated crack detection and crack growth rate monitoring is described
and experimentally validated. The capability is based on a low-cost industrial grade …

Recent innovations in thermal-detector technology are shown to foster the development of
an in situ structural health monitoring capability based on thermoelastic stress analysis, a …

This study compares the stress-measurement sensitivity of several commercially available
vanadium-oxide microbolometers to a scientific grade cooled indium antimonide imager. The …

Lap joints are widely used across many critical structures such as aircraft and bridges. Lamb
waves have long been proposed to monitor lap joints against defects such as disbonds. …

A new acoustic sensing capability, consisting of a flexible high-density linear piezoelectric
sensor array coupled to a high-bandwidth interrogation device, is developed and applied to in …