Ultrasonic testing (UT) is considered as one of the modern technologies that would check technical constructions and solid materials and detect internal defects while keeping the structures intact and in good condition. state. Ultrasound uses acoustic waves to diffuse through the material to test and detect any irregularities. These irregularities are discontinuities (type and location), material grain structure, thickness, internal corrosion, etc. Ultrasonic testing can be used on a wide variety of plastics, composites, ceramics and metals, but cannot be used on wood and paper products. Other limitations include the shape of the material, its surface area, its orientation during testing and the device must be able to test the material with ease. This new technology is known as non-destructive testing (NDT), because the waves penetrate the material without damaging the original. structure. The UT device would include a receiver, a transducer and a monitor where the transducer would generate high-frequency sound waves that would propagate through the material being tested; these sound waves are generated at a level above human hearing capacity. The waves would pass through and when encountered with a discontinuity, part of the wave would be reflected and then converted into an electrical signal where the monitor could display the result. Ultrasound is based on acoustics focused on the unidirectional movement of atoms, which in turn generates a mechanical wave that will be homogeneous everywhere. The frequencies of the waves used are generally high, meaning the wavelengths are much shorter and more responsive, making it easy to detect changes in the medium in the material. UT detects defects in the material, defects which can cause...... middle of paper ......solutions/introduction-ultrasound/introduction-material-analysis/ >2010. "Ultrasound Testing FAQ". Olympus. April 15, 2010 Berke, M. 2000. “Nondestructive Ultrasonic Materials Testing.” NDT.net. April 15, 2010 < http://www.ndt.net/article/v05n09/berke/berke1.htm#0 >"Introduction to Ultrasound Testing". CND Resource Center. April 15, 2010 < http://www.ndt-ed.org/EducationResources/CommunityCollege/Ultrasonics/cc_ut_index.htm >Singha, Rajib. 2010. “Ultrasonic Testing – Ultrasonic Inspection Equipment.” Buzzle.com. April 15, 2010 Tietz, May, Dietz, Bühling, 1997. "Ultrasonic testing of green ceramic materials". NDT.net. April 15, 2010