Application of Micro-Electro-Mechanical Sensors Contactless NDT of Concrete Structures

Sensors

Suyun Ham²  John S. Popovics¹ 

[1] Department of Civil and Environmental Engineering, The University of Illinois at Urbana-Champaign, 205 N. Mathews Ave, MC-250, Urbana, IL 61801, USA; E-Mail

关键词: air-coupled;    impact-echo;    MEMS;    ultrasound;   

DOI  :  10.3390/s150409078

来源: mdpi

【 摘 要 】

The utility of micro-electro-mechanical sensors (MEMS) for application in air-coupled (contactless or noncontact) sensing to concrete nondestructive testing (NDT) is studied in this paper. The fundamental operation and characteristics of MEMS are first described. Then application of MEMS sensors toward established concrete test methods, including vibration resonance, impact-echo, ultrasonic surface wave, and multi-channel analysis of surface waves (MASW), is demonstrated. In each test application, the performance of MEMS is compared with conventional contactless and contact sensing technology. Favorable performance of the MEMS sensors demonstrates the potential of the technology for applied contactless NDT efforts. Objective: To illustrate the utility of air-coupled MEMS sensors for concrete NDT, as compared with conventional sensor technology.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.