Integrity assessment of metallic structures requires inspection tools capable of detecting and
evaluating cracks reliably. To this end, many microwave and millimeter-wave nondestructive …

Abstract Radio Frequency Identification (RFID) technology is considered as a new sensing
paradigm due to its low-cost, passive wireless power transfer capability, flexibility, and non …

A metal crack detection sensor based on a microstrip antenna is presented in this article to
detect cracks hidden under the coating. Since the frequency offset of the microstrip antenna …

The application of different types of microwave resonators for sensing cracks in metallic
structures has been subject of many studies. While most studies have been focused on …

Besides the sensor design, the detection frequency is another vital factor for microwave
detection. We present a frequency-adjustable humidity sensor to determine the optimum …

Cracks are commonly occurring defects in metal. Crack monitoring in large-area
infrastructures requires numerous sensors and thus increases the weight, complexity, and …

Ice and snow accretion on aircraft surfaces imposes opera-tional and safety challenges,
severely impacting aerodynamic performance of critical aircraft structures and equipment …

Microwave sensors have attracted interest as non-destructive metal crack detection (MCD)
devices due to their low cost, simple fabrication, potential miniaturization, noncontact nature …

Detecting covered cracks in metals is critical in many applications. In this article, a single
dual-polarized circular aperture antenna and synthetic aperture imaging are devised to …

A passive substrate integrated waveguide (SIW) sensor based on the complementary split
ring resonator (CSRR) is presented for pressure detection in high-temperature …