Effect of driving frequency on non-linear coupling between ultrasound transducer and target under inspection in Sonic Infrared Imaging

Song, Yang; Han, Xiaoyan

doi:10.1016/j.infrared.2014.05.009

Cited by 6 publications

(2 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…They used three different frequency (20, 30 and 40 kHz) on Al bars. They concluded that when frequency is increased, acoustic energy and detectability of cracks decrease [78].…”

Section: Factors That Affect Vibrothermography Performancementioning

confidence: 99%

“…For the location of the excitation point, Liu et al stated that this location should be closer to the defects which are located at greater depth from the surface [89]. For coupling media, Song et al compared duct tape and leather tape and stated that the duct tape is better than leather tape [78]. Bolu et al performed vibrothermography inspection on high strength Nickel alloy turbine blades and stated that a general increase in the temperature rise can be seen with an increase in the horn static force, vibration amplitude and excitation time.…”

Section: Factors That Affect Vibrothermography Performancementioning

confidence: 99%

See 1 more Smart Citation

Recent developments in vibrothermography

Gülcan¹

2021

Res. Eng. Struct. Mater.

View full text Add to dashboard Cite

Due to the sensitivity of fluorescent penetrant inspection to surface roughness of the inspected material, researchers have been investigating alternative inspection methods. Vibrothermography is one of the contactless nondestructive testing methods in which vibration pulses with high frequencies (typically 20-40 kHz) are used in a part for a short period of time to produce thermal gradient at the defect. In this technique, thermographic or infra-red cameras are used for radiation detection due to thermal gradient in the range of 0.9-14 µm electromagnetic spectrum. This paper focuses on the recent developments in vibrothermography. It covers basics, history, equipments used, types, materials, probability of detection, principle of heat generation mechanism and factors that affect detectability in vibrothermography.

show abstract

“…They used three different frequency (20, 30 and 40 kHz) on Al bars. They concluded that when frequency is increased, acoustic energy and detectability of cracks decrease [78].…”

Section: Factors That Affect Vibrothermography Performancementioning

confidence: 99%

Section: Factors That Affect Vibrothermography Performancementioning

confidence: 99%