Abstract ▼ AI-Helper

A various structural materials are used in construction projects such as a stone, concrete, steel materials. Between of them, concrete are used widely. The compressive strength of concrete is high, and its maintenance and management is comparatively easy. The R.C Building will be superannuated as ti...

A various structural materials are used in construction projects such as a stone, concrete, steel materials. Between of them, concrete are used widely. The compressive strength of concrete is high, and its maintenance and management is comparatively easy. The R.C Building will be superannuated as time passes. This program is generated by propagation of cracks. In order to manage such cracks, time and efforts, expense, etc. are require Smart materials and structures have not been developed until recent years. Various sensors have already been used for sensing damage in a variety of materials and structures such as piezoelectric materials (PZT) and electric strain gauges. The PZT changes physical force if load cell to electrical signal due to deformation of structure. Strain gauges are used to measure the deformation of compressionand tension members. The application of using smart materials realized for a monitoring technology when sensors used for monitor damaging of the structures. Many researchers, however, have attempted to acquire the changes to signals from electronic sensors without taking into consideration on the characteristics of the structure. From this reason, there are several limitations of its application. In this study, a fundamental study on the development of a damage detecting system using lead- electric resistance sensors, glass tube switches, compound sensors using electric resistance and piezoelectric materials, wireless sensors are discussed.