High frequency guided wave ultrasound measurements using low-cost equipment

Guided wave ultrasound can be applied to inspect large volumes of structures from a single transducer location and is particularly effective in one-dimensional structures such as rods, pipes and rail. An application, which is of interest in South Africa, is the inspection rock bolts in the mining in...

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Autor principal:	Loveday Philip
Formato:	article
Lenguaje:	EN FR
Publicado:	EDP Sciences 2021
Materias:	Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/45388aa3fb83401f8abeaf737e346f68
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id	oai:doaj.org-article:45388aa3fb83401f8abeaf737e346f68
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spelling	oai:doaj.org-article:45388aa3fb83401f8abeaf737e346f682021-12-02T17:13:35ZHigh frequency guided wave ultrasound measurements using low-cost equipment2261-236X10.1051/matecconf/202134700010https://doaj.org/article/45388aa3fb83401f8abeaf737e346f682021-01-01T00:00:00Zhttps://www.matec-conferences.org/articles/matecconf/pdf/2021/16/matecconf_sacam21_00010.pdfhttps://doaj.org/toc/2261-236XGuided wave ultrasound can be applied to inspect large volumes of structures from a single transducer location and is particularly effective in one-dimensional structures such as rods, pipes and rail. An application, which is of interest in South Africa, is the inspection rock bolts in the mining industry. The difficulty in inspecting embedded rods is that there is rapid attenuation of the signals with distance. While guided wave systems generally operate at low frequencies (20 kHz to 200 kHz), high frequency operation (1 MHz to 10 MHz) can offer some advantages when inspecting rock bolts. Guided wave ultrasound testing is complicated by multi-modal propagation and dispersion, which require the use of sophisticated excitation signals, which are not available in equipment designed for conventional ultrasonic testing. It was therefore necessary to develop a measurement setup and the approach taken was to use standard lab instruments wherever possible and to only purchase the items that are unique to this measurement, using the very limited budget available. The measurement setup was used to perform measurements on a rod and confirmed theoretical predictions. These measurements identified the frequencies where modes propagate with low attenuation and allow the attenuation to be quantified.Loveday PhilipEDP SciencesarticleEngineering (General). Civil engineering (General)TA1-2040ENFRMATEC Web of Conferences, Vol 347, p 00010 (2021)
institution	DOAJ
collection	DOAJ
language	EN FR
topic	Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Engineering (General). Civil engineering (General) TA1-2040 Loveday Philip High frequency guided wave ultrasound measurements using low-cost equipment
description	Guided wave ultrasound can be applied to inspect large volumes of structures from a single transducer location and is particularly effective in one-dimensional structures such as rods, pipes and rail. An application, which is of interest in South Africa, is the inspection rock bolts in the mining industry. The difficulty in inspecting embedded rods is that there is rapid attenuation of the signals with distance. While guided wave systems generally operate at low frequencies (20 kHz to 200 kHz), high frequency operation (1 MHz to 10 MHz) can offer some advantages when inspecting rock bolts. Guided wave ultrasound testing is complicated by multi-modal propagation and dispersion, which require the use of sophisticated excitation signals, which are not available in equipment designed for conventional ultrasonic testing. It was therefore necessary to develop a measurement setup and the approach taken was to use standard lab instruments wherever possible and to only purchase the items that are unique to this measurement, using the very limited budget available. The measurement setup was used to perform measurements on a rod and confirmed theoretical predictions. These measurements identified the frequencies where modes propagate with low attenuation and allow the attenuation to be quantified.
format	article
author	Loveday Philip
author_facet	Loveday Philip
author_sort	Loveday Philip
title	High frequency guided wave ultrasound measurements using low-cost equipment
title_short	High frequency guided wave ultrasound measurements using low-cost equipment
title_full	High frequency guided wave ultrasound measurements using low-cost equipment
title_fullStr	High frequency guided wave ultrasound measurements using low-cost equipment
title_full_unstemmed	High frequency guided wave ultrasound measurements using low-cost equipment
title_sort	high frequency guided wave ultrasound measurements using low-cost equipment
publisher	EDP Sciences
publishDate	2021
url	https://doaj.org/article/45388aa3fb83401f8abeaf737e346f68
work_keys_str_mv	AT lovedayphilip highfrequencyguidedwaveultrasoundmeasurementsusinglowcostequipment
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High frequency guided wave ultrasound measurements using low-cost equipment

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