Comparison of test methods for measuring the net buoyant force of buoyant materials

Li, Nga-wun; Ho, CP; Yick, KL; Zhou, JY

Comparison of test methods for measuring the net buoyant force of buoyant materials

Li, Nga-wun Ho, CP Yick, KL Zhou, JY

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Publisher:: Emerald
Publication Type:: Journal Article
Citation:: Research Journal of Textile and Apparel, 2020, 24, (2), pp. 147-161
Issue Date:: 2020-05-22

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Field	Value	Language
dc.contributor.author	Li, Nga-wun
dc.contributor.author	Ho, CP
dc.contributor.author	Yick, KL
dc.contributor.author	Zhou, JY
dc.date.accessioned	2022-10-31T04:50:48Z
dc.date.available	2022-10-31T04:50:48Z
dc.date.issued	2020-05-22
dc.identifier.citation	Research Journal of Textile and Apparel, 2020, 24, (2), pp. 147-161
dc.identifier.issn	1560-6074
dc.identifier.issn	2515-8090
dc.identifier.uri	http://hdl.handle.net/10453/163061
dc.description.abstract	Purpose: Net buoyant force is a crucial factor affecting the functional performance of clothing for water safety. This study aims to develop an alternative method for measuring the net buoyant force of various buoyant materials such as buoyant fabrics, on a small scale in a more accurate and efficient way than the existing method. Design/methodology/approach: The net buoyant forces of buoyant materials with different thicknesses and forms were determined and compared using three methods. In Method 1, the traditional method involving mathematical calculations was used; Method 2 involved using the buoyancy-measuring device from the study of Jin et al. (2018) and Method 3 involved using an alternative buoyancy-measuring system that simulates the actual situation of using buoyant swimwear by measuring the force needed to submerge the buoyant material in water at a standard depth. The net buoyant forces of 22 buoyant materials were measured and compared to test these three methods. The accuracy, reproducibility, sensitivity and validity of these methods were then statistically compared. Findings: The results obtained with the alternative buoyancy-measuring system had higher accuracy, reproducibility and validity than the results obtained through mathematical calculations. The sensitivity of the buoyancy-measuring system (Methods 2 and 3) was higher than that of the traditional method involving calculations (Method 1). Originality/value: An alternative method is proposed to measure the net buoyant force of buoyant materials on a small scale with higher accuracy, reproducibility and sensitivity.
dc.language	en
dc.publisher	Emerald
dc.relation.ispartof	Research Journal of Textile and Apparel
dc.relation.isbasedon	10.1108/RJTA-08-2019-0036
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	1203 Design Practice and Management
dc.title	Comparison of test methods for measuring the net buoyant force of buoyant materials
dc.type	Journal Article
utslib.citation.volume	24
utslib.for	1203 Design Practice and Management
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Design, Architecture and Building
pubs.organisational-group	/University of Technology Sydney/Faculty of Design, Architecture and Building/School of Design
utslib.copyright.status	closed_access	*
dc.date.updated	2022-10-31T04:50:47Z
pubs.issue	2
pubs.publication-status	Published
pubs.volume	24
utslib.citation.issue	2

Abstract:

Purpose: Net buoyant force is a crucial factor affecting the functional performance of clothing for water safety. This study aims to develop an alternative method for measuring the net buoyant force of various buoyant materials such as buoyant fabrics, on a small scale in a more accurate and efficient way than the existing method. Design/methodology/approach: The net buoyant forces of buoyant materials with different thicknesses and forms were determined and compared using three methods. In Method 1, the traditional method involving mathematical calculations was used; Method 2 involved using the buoyancy-measuring device from the study of Jin et al. (2018) and Method 3 involved using an alternative buoyancy-measuring system that simulates the actual situation of using buoyant swimwear by measuring the force needed to submerge the buoyant material in water at a standard depth. The net buoyant forces of 22 buoyant materials were measured and compared to test these three methods. The accuracy, reproducibility, sensitivity and validity of these methods were then statistically compared. Findings: The results obtained with the alternative buoyancy-measuring system had higher accuracy, reproducibility and validity than the results obtained through mathematical calculations. The sensitivity of the buoyancy-measuring system (Methods 2 and 3) was higher than that of the traditional method involving calculations (Method 1). Originality/value: An alternative method is proposed to measure the net buoyant force of buoyant materials on a small scale with higher accuracy, reproducibility and sensitivity.

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http://hdl.handle.net/10453/163061