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Time-of-Flight Diffraction (TOFD) is an advanced ultrasonic inspection technique best suited for inspection especially inservice wherein the focus is on detection of cracks and linear indications which can propagate during service. The technique is widely used in process industries and also in strategic sector like nuclear. In the case of ISI in nuclear industry, the main difficulties likely to arise...
The microwave transmitters are used for variety of applications in the fields of communications, radar and Electronic Attack. The airborne transmitter design should address the needs like size, weight, primary electrical power, efficiency, reliability etc. In this paper, a MPM transmitter developed currently for an airborne EW system is discussed. Also the integration and evaluation of the transmitter...
Tungsten inert gas welding is the best suited welding technique for precision welding in atomic and aircraft industries. The most commonly occurring weld defect is tungsten inclusion, which is mainly due to high welding current. Monitoring and controlling weld current can avoid the defect. Developing an automated on-line welding system to correct the deviation in the welding current requires an effective...
This paper discusses the fundamentals of a motor thermal model and its mathematical interpretation and physics for the different stages of motor operation, (overload, locked rotor, too frequent or prolonged acceleration, duty cycling applications). It explains thermal model time constants and other technical aspects causing the biasing of the thermal model algorithm. Other topics covered in this paper...
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