Remote acoustic sensing of mechanical changes in thin vibrating plates

2015 ◽  
Vol 138 (3) ◽  
pp. 1941-1941
Author(s):  
Tyler J. Flynn ◽  
David R. Dowling
Keyword(s):  
Acoustic Sensing ◽  
Vibrating Plates

Remote acoustic sensing of damage in vibrating plates

2021 ◽  
Vol 150 (4) ◽  
pp. A39-A39
Author(s):  
David R. Dowling ◽  
Tyler J. Flynn
Keyword(s):  
Acoustic Sensing ◽  
Vibrating Plates

GOATS 2005: Integrated, Adaptive Autonomous Acoustic Sensing Systems

2006 ◽  
Author(s):  
Henrik Schmidt ◽  
John J. Leonard ◽  
David Battle
Keyword(s):  
Acoustic Sensing ◽  
Sensing Systems

Robust Human Face Authentication Leveraging Acoustic Sensing on Smartphones

2021 ◽  
pp. 1-1
Author(s):  
Bing Zhou ◽  
Zongxing Xie ◽  
Yinuo Zhang ◽  
Jay Lohokare ◽  
Ruipeng Gao ◽  
...  
Keyword(s):  
Human Face ◽  
Acoustic Sensing ◽  
Face Authentication

Acoustic sensing with light

2021 ◽  
Vol 15 (5) ◽  
pp. 324-326
Author(s):  
David C. Garrett ◽  
Lihong V. Wang
Keyword(s):  
Acoustic Sensing

scholarly journals Wash Testing of Electronic Yarn

Materials ◽  
2020 ◽  
Vol 13 (5) ◽  
pp. 1228 ◽  
Author(s):  
Dorothy Anne Hardy ◽  
Zahra Rahemtulla ◽  
Achala Satharasinghe ◽  
Arash Shahidi ◽  
Carlos Oliveira ◽  
...  
Keyword(s):  
Research Group ◽  
Copper Wire ◽  
Mechanical Systems ◽  
Consumer Products ◽  
Temperature Sensing ◽  
Micro Electro Mechanical Systems ◽  
Acoustic Sensing ◽  
Protective Polymer ◽  
Wash Durability

Electronically active yarn (E-yarn) pioneered by the Advanced Textiles Research Group of Nottingham Trent University contains a fine conductive copper wire soldered onto a package die, micro-electro-mechanical systems device or flexible circuit. The die or circuit is then held within a protective polymer packaging (micro-pod) and the ensemble is inserted into a textile sheath, forming a flexible yarn with electronic functionality such as sensing or illumination. It is vital to be able to wash E-yarns, so that the textiles into which they are incorporated can be treated as normal consumer products. The wash durability of E-yarns is summarized in this publication. Wash tests followed a modified version of BS EN ISO 6330:2012 procedure 4N. It was observed that E-yarns containing only a fine multi-strand copper wire survived 25 cycles of machine washing and line drying; and between 5 and 15 cycles of machine washing followed by tumble-drying. Four out of five temperature sensing E-yarns (crafted with thermistors) and single pairs of LEDs within E-yarns functioned correctly after 25 cycles of machine washing and line drying. E-yarns that required larger micro-pods (i.e., 4 mm diameter or 9 mm length) were less resilient to washing. Only one out of five acoustic sensing E-yarns (4 mm diameter micro-pod) operated correctly after 20 cycles of washing with either line drying or tumble-drying. Creating an E-yarn with an embedded flexible circuit populated with components also required a relatively large micro-pod (diameter 0.93 mm, length 9.23 mm). Only one embedded circuit functioned after 25 cycles of washing and line drying. The tests showed that E-yarns are suitable for inclusion in textiles that require washing, with some limitations when larger micro-pods were used. Reduction in the circuit’s size and therefore the size of the micro-pod, may increase wash resilience.

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