Detection of a subsurface flaw with the total Internal Reflection Ultrasonic Sensor

Yurchenko, Alexander; Danilov, V. V.; Pilgun, Yuriy; Смирнов, Е. Н.

doi:10.1109/ultsym.2013.0049

Cited by 3 publications

(7 citation statements)

References 3 publications

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“…Unlike the case considered in [9] where the slow shear wave (SSW) was emitted into the [110] direction, in the current research it was emitted into the [001] direction (Fig. 1).…”

Section: Introductionmentioning

confidence: 70%

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Real-Time Acousto-Optic Visualization of Ultrasonic Pulses in TeO_2

et al. 2015

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The ultrasonic beam features in ultrasonic and acousto-optic devices have a great impact on their characteristics and need to be studied. In the current work, a conventional optical visualization technique was extended to include spatial ltration of the light diraction pattern and stroboscopic illumination of a unit under test. That enabled very weak light responses from ultrasonic waves to be observed. This technique was applied to studying propagation and reection of ultrasonic pulses in the TeO2 crystal, a body of the total internal reection ultrasonic sensor. Analysis of visualization data has revealed an unexpected conversion of the shear horizontal wave radiated by the transducer into a longitudinal one on its normal reection from the (001) face of the crystal, which is inexplicable as far as the plane wave theory is concerned. This nding requires further research to be conrmed and explained.

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“…Unlike the case considered in [9] where the slow shear wave (SSW) was emitted into the [110] direction, in the current research it was emitted into the [001] direction (Fig. 1).…”

Section: Introductionmentioning

confidence: 70%

“…The purpose of the current research is to study propagation and reection of ultrasonic pulses in the total internal reection ultrasonic sensor (TIRUS) [9] made of a TeO 2 crystal.…”

Section: Introductionmentioning

confidence: 99%

Real-Time Acousto-Optic Visualization of Ultrasonic Pulses in TeO_2

et al. 2015

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“…Main results of the research were presented at four international conferences numbered [2,15,16,17] in the list of references.…”

Section: Discussionmentioning

confidence: 99%

“…Because the attempts to fabricate the specimens with the void-type defects failed, specimens with a "foreign inclusion" type were fabricated [2]. They were made in the same way, with the plate of fused quartz bonded to the top surface of its solid block.…”

Section: Fabrication Of Specimens With Subsurface Defectsmentioning

confidence: 99%

“…In this section, the experimental data are presented on the TIRUS response to an artificial subsurface "defect" located at the depth of ~90 µm under the surface of a tested specimen. Experimental validation of the TIRUS capability to sense subsurface defects was performed by direct comparison of the sensor responses while being in contact with either a flawless or a defected specimen [2]. In this particular case, the specimen under test made of fused quartz was similar to that described in section 2.4.4, As mentioned in section 2.4.4, the technology on hand did not allow to make a defected specimen with a real discontinuity at such a depth therefore it was made as a combination of two pieces of fused quartz, a block and a thin plate, and a foreign inclusion between them.…”

Section: Detection Of a Subsurface "Flaw" With The Tirusmentioning

confidence: 99%

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Total Internal Reflection Ultrasonic Sensor for Detection of Subsurface Flaws: Research into Underlying Physics

Yurchenko¹,

Kolyenov²,

Pilgun³

et al. 2014

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