Indian Institute of Technology-Madras Awareness on Advanced NDE 27-28th February 2015.
About the Workshop
Time-of-flight diffraction (TOFD) Advanced NDT method of ultrasonic testing is a sensitive and accurate method for the nondestructive testing of welds for defects. TOFD originated from tip diffraction techniques which were first published by Silk and Liddington in 1975 and later developed by Bray and Stanley (1997).
Bray and Stanley (1997) summarized TOFD as tip-diffraction techniques which utilized the principle that the tips of a crack when struck by a wave will diffract the signals back to the other location on the surface. The depth of these tips can be determined from the diffracted energy. The use of TOFD enabled crack sizes to be measured more accurately, so that expensive components could be kept in operation as long as possible with minimal risk of failure.
X-ray computed tomography (X-ray CT) is a technology that uses computer-processed X-rays to produce tomographic images(virtual 'slices') of specific areas of a scanned object, allowing the user to see inside the object without cutting.
Digital geometry processing is used to generate a three dimensional image of the inside of the object from a large series of two dimensional radiographic images taken around a single axis of rotation. Medical imaging is the most common application of X-ray CT. Its cross-sectional images are used for diagnostic and therapeutic purposes in various medical disciplines. The rest of this article discusses medical-imaging X-ray CT; industrial applications of X-ray CT are discussed at industrial computed tomography scanning.
Advanced NDT methods for the assessment of concrete structures
The development of methods for the Non- Destructive Evaluation (NDE) of concrete and masonry structures has made considerable progress in the past two decades. Technology and knowledge transfer from other areas such as materials testing and medicine has been the main source for innovation, supported through multidisciplinary research by scientists, technicians and support personnel.
In the area of simulation and 3D-reconstruction of ultrasonic and radar data, progress was driven by more powerful computers and development of state of the art software for 3D re-construction and visualization of data.
Validation of NDT methods has to prove that the customer requirements are met by the test. A focused effort is needed to implement a validation methodology for NDT methods in civil engineering, which is widely accepted and used. In an effort towards this goal, a number of reference specimens have been developed over the years for specific testing tasks for the detection of the presence of voids, delaminations, ungrouted tendon ducts or cracks.. Those specimens are available o the NDT community for comparing their methods and instruments under independent conditions.
Infrared thermography (IRT), thermal imaging, and thermal video are examples ofinfrared imaging science. Thermographic cameras detect radiation in the infrared range of the electromagnetic spectrum (roughly 9,000–14,000 nanometers or 9–14 μm) and produce images of that radiation, called thermograms. Since infrared radiation is emitted by all objects above absolute zero according to the black body radiation law, thermography makes it possible to see one's environment with or without visible illumination. The amount of radiation emitted by an object increases with temperature; therefore, thermography allows one to see variations in temperature. When viewed through a thermal imaging camera, warm objects stand out well against cooler backgrounds; humans and other warm-blooded animals become easily visible against the environment, day or night. As a result, thermography is particularly useful to the military and other users of surveillance cameras.
Applied Mechanics Division, IIT -Madras, Chennai, Tamilnadu, India
The Participants Target Group
- Head of the academic Institutions/Departments
- Head of the Quality & Production
Departments in Industries Senior Executives of Industries who have NDE Qualification & Experience
- NDE qualified Technicians in Government of India Public sectors & Private Institutions Research Scholars
No of participants are limited to 40 (Forty) Only on the basis of first comes first reserved
27 & 28th February 2015
For more information contact workshop Conveners
Mr. R Balakrishnan & Mr. V Muralidharan
17,4th Cross Street, Indiranagar, Adyar,
Phone No. 8189930444, 9840663162