Elastic wave analyzer for icy sub-surfaces (EWAIS) in water-bearing worlds

Hyeong Jae Lee; Yoseph Bar-Cohen; Mircea Badescu; Stewart Sherrit; Xiaoqi Bao; Maikel Heness

doi:10.1117/12.2557084

22 April 2020 Elastic wave analyzer for icy sub-surfaces (EWAIS) in water-bearing worlds

Hyeong Jae Lee, Yoseph Bar-Cohen, Mircea Badescu, Stewart Sherrit, Xiaoqi Bao, Maikel Heness

Proceedings Volume 11381, Health Monitoring of Structural and Biological Systems XIV; 1138106 (2020) https://doi.org/10.1117/12.2557084
Event: SPIE Smart Structures + Nondestructive Evaluation, 2020, Online Only

Abstract

In this paper, we discuss the current status of the development of an elastic wave analyzer for icy sub-surface (EWAIS). We begin with an introductory overview of the necessity to develop an active elastic wave transmitter that will enable reaching distances of kilometer thru ice. It is being developed to be driven by piezoelectric transducers with a bouncing constrained mass that impacts a transmission head. The EWAIS transmits the waves at two distinct frequencies; the primary frequency of the actuator at ~10 kHz for high resolution, and the secondary converted low frequency (LF) in the range of 100 to 500 Hz for long distance transmission. The sonar equation was used for the estimation of required source level, and an impact force sensor is used for the performance measurement of EWAIS prototype.

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Citation Download Citation

Hyeong Jae Lee, Yoseph Bar-Cohen, Mircea Badescu, Stewart Sherrit, Xiaoqi Bao, and Maikel Heness "Elastic wave analyzer for icy sub-surfaces (EWAIS) in water-bearing worlds", Proc. SPIE 11381, Health Monitoring of Structural and Biological Systems XIV, 1138106 (22 April 2020); https://doi.org/10.1117/12.2557084

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