Mechanical Strain, Temperature, and Misalignment Effects on Data Communication between Piezoceramic Ultrasonic...

Area of Science:

• Acoustic Engineering
• Wireless Communication
• Materials Science

Background:

• Acoustic waves provide wireless telemetry, particularly useful when electrical or optical penetrators are unsuitable.
• Ultrasonic transducer performance can be significantly influenced by environmental and physical factors.

Purpose of the Study:

• To quantify the effects of temperature variations, mechanical deformations, transducer misalignment, and multiple propagation layers on ultrasonic transducer communication.
• To assess the robustness of ultrasonic communication under various physical and environmental stresses.

Main Methods:

• Experimental measurements were conducted at the frequency of maximum power transfer.
• Four experimental models were used, including single stainless-steel plates and multi-layered plates in acoustic fluid.
• The S21 parameter was measured to quantify power transfer and the influence of physical barriers.

Main Results:

• A maximum deformation of 1250 μm/m caused an S21 amplitude variation of approximately +0.7 dB.
• Temperature increase from 30 to 100 °C resulted in a slight S21 change (+0.8 dB), with rapid decay beyond 100 °C.
• Ultrasonic communication maintained functionality with up to 40% misalignment in multi-layered setups.

Conclusions:

• Ultrasonic communication demonstrates robustness against temperature fluctuations and moderate deformation.
• A minimum transducer alignment of 40% is acceptable, indicating practical viability.
• This technology presents a reliable alternative to conventional telemetry methods, especially in challenging environments.