![]() Transducer frequencies are most commonly in the 2 MHz to 10 MHz range. As is the case with conventional transducers, phased array probes can be designed for direct contact use, as part of an angle beam assembly with a wedge, or for immersion use with sound coupling through a water path. These can be arranged in a strip (linear array), 2D matrix, a ring (annular array), a circular matrix (circular array), or a more complex shape. Phased array probes typically consist of a transducer assembly with 16 to as many as 256 small individual elements that can each be pulsed separately. To learn more about conventional Ultrasonic testing read our Blog :īasic Functional Controls of a UFD What Is a Phased Array System? The Phased Array beam sweeps like a searchlight through the object, resulting in a recordable image that reveals defects hidden inside a structure or weld Phased Array Ultrasonic Testing (PAUT) is an advanced ultrasonic technique that permits the shaping and steering of the ultrasonic beam angles, dynamic depth focusing and enhanced beam coverages. Conventional ultrasonic transducers for NDT commonly consist of either a single active element that both generates and receives high- frequency sound waves, or two paired elements, one for transmitting and one for receiving. Ultrasonic testing is capable of revealing the subsurface discontinuities in a variety of dissimilar materials, hence it is one of the most effective tools available to quality assurance personal. Lecture 43 - Digital Image Processing (cont.UT – Ultrasonic testing is used to test a variety of both metallic and nonmetallic products, such as welds, forgings, castings, sheets, tubing, plastics (both fiber-reinforced and unreinforced), and ceramics. Lecture 42 - Digital Image Processing, Image Compression, Jpeg Enhancements Lecture 40 - Graphics Programming using OpenGL (cont.) Lecture 39 - Graphics Programming using OpenGL Lecture 38 - Curves and Surface Representation Lecture 37 - Curve Representation (cont.) Lecture 35 - Illumination and Shading (cont.) Lecture 34 - Illumination and Shading (cont.) Lecture 32 - Visible Surface Detection (cont.) Lecture 31 - Visible Surface Detection (cont.) Lecture 30 - Visible Surface Detection (cont.) Lecture 29 - Visible Surface Detection (cont.) Lecture 28 - Visible Surface Detection (cont.) Lecture 27 - Visible Surface Detection (cont.) Lecture 21 - Clipping: Lines and Polygons (cont.) Lecture 20 - Clipping: Lines and Polygons Lecture 19 - Scan Conversion of a Polygon (cont.) Lecture 18 - Polyfill - Scan Conversion of a Polygon Lecture 17 - Scan Converting Lines, Circles and Ellipses (cont.) Lecture 16 - Scan Converting Lines, Circles and Ellipses (cont.) Lecture 15 - Scan Converting Lines, Circles and Ellipses (cont.) Lecture 14 - Scan Converting Lines, Circles and Ellipses (cont.) Lecture 13 - Scan Converting Lines, Circles and Ellipses Lecture 12 - 3D Viewing - Projection Transformations and Viewing Pipeline Lecture 11 - Projection Transformations and Viewing Pipeline Lecture 10 - Three Dimensional Graphics (cont.) Lecture 09 - Three Dimensional Graphics (cont.) ![]() Lecture 07 - Transformations in 2D (cont.) Lecture 04 - CRT Display Devices: Refresh and Raster Scan Display System (cont.) Lecture 03 - CRT Display Devices: Refresh and Raster Scan Display System Lecture 02 - CRT Display Devices: Direct View Storage Tube, Random Scan Display Systems Lecture 01 - Introduction to Computer Graphics ![]() Go to the Course Home or watch other lectures: Lecture 41 - Advanced Topics: Anti-aliasing, Color, Soft Objects, Animation, Visual Effects Topics covered include CRT display devices, two dimensional transformations, three dimensional transformations, viewing in 3D, scan conversion, solid modelling, visible surface determination, illumination and shading, plane curves and surfaces, graphics programming using OpenGL, and digital image processing. This course provides an introduction to computer graphics which plays a very important role in almost every applications of computer software and use of computer science. Sukhendu Das, Department of Computer Science and Engineering, IIT Madras.
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