Non-contact estimation of the thickness and elastic properties of metallic foils was attempted
by quantitative analysis of velocity dispersion of laser-generated Lamb waves. Lamb waves …

Fiber Bragg grating (FBG) is an optical fiber sensor and is suitable for acoustic emission
(AE) measurements of structures such as chemical plants that require water resistance …

The analysis of wave propagation in structures is a fundamental issue related to a wide
range of engineering problems such as the analysis of impact response of structures, the …

The measurement and control of trace moisture, where the water concentration is lower than
1 ppmv [− 76.2 C for the frost point (CFP)], are essential for improving the yield rate of …

An attempt is made to investigate the integrity of gas barrier SiOx film on PET (polyethylene
terapthalate) by AE characterization during tensile loading. As the amplitude of AE signals is …

In orthopedic field, various new treatments of articular cartilage defect, for example
autogenous osteochondral grafts, have been developed. With the spread of these …

We investigated propagation properties of Lamb waves in GIS tank using time-frequency
analysis to diagnose insulation performance of GIS. We measured the acoustic signals …

When frequencies used in the two-frequency measurement of a SAW sensor are
represented by f 1 and f 2 (f 2> f 1), an electrical signal processing device is provided without …

Shearing is a machining operation that separates the workpiece material by the growth of a
crack, which occurs in the narrow region around the tool tip. It is necessary to evaluate the …

The evaluation of impact damage properties and strength of C/C composites is becoming
important, due to its low impact strength. In this study, the impact damage is evaluated by …