Principle – Magnetic Particle Inspection Magnetic particle inspection is a method of detecting invisible cracks and other defects in ferromagnetic materials such as iron and steel. It is not applicable to nonmagnetic materials. The inspection process consists of magnetizing the part and then applying ferromagnetic particles to the surface area are to be inspected. If
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Methods of Voltage Control Methods Voltage control level is accomplished by controlling the generation, absorption and reactive power flow at all levels in the system. The following are the methods of voltage control. By excitation control. By static shunt capacitors. By static series capacitors. By static shunt reactors. By synchronous condensers. Other methods for voltage
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Nondestructive testing (NDT) is the examination of an object or material with technology that does not affect its future usefulness. It is an approach to testing that involves in evaluating the weld without causing physical damage. The terms Nondestructive examination (NDE), Nondestructive inspection (NDI), and Nondestructive evaluation (NDE) are also commonly used to describe this
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Friction Welding (FRW) – Welding Processes used in Aeronautical Industry In this process (Welding Processes used in Aeronautical Industry), joining of the metals is achieved through mechanical deformation. Since there is no melting, defects associated with melting-solidification phenomena are not present and unions as strong as the base material can be made. This process can
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Tort and Breach of Contract A tort and breach of contract results from the breach of a duty undertaken by the parties themselves. The agreement, the violation of which is known as a breach of contract is made by the parties with their free consent. A tort, on the other hand, results from the breach
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Atomic Hydrogen Welding (AHW) Atomic Hydrogen Welding (AHW) is a combination of electric are and gas welding technique. It is a thermo-chemical arc welding process in which the workpieces are joined by heat obtained on passing a stream of hydrogen through an electric arc struck between two tungsten electrodes. The arc supplies the energy for
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Structures for InGaAs To improve the performance of structures for InGaAs APDs, various complex device architectures have been devised. One widely used structure is the separate-absorption-and-multiplication (SAM) APD configuration. Image shows, this structure uses different materials in the absorption and multiplication regions, with each region being optimized for a particular function. Here, light enters the
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A power system is said to be well designed if it gives a good quality of reliable supply. Voltage level maintained within reasonable limits is referred as good quality. If reactive power and voltage control variation is more than specified value, the performance of equipment suffers and also the life of equipment is sacrificed. When
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Optical Fiber Connectors A wide variety of optical fiber connectors has evolved for range numerous different applications. Their uses from simple single channel fiber to fiber connectors in a benign location to multichannel connectors used in harsh military field environments. Some of the principal requirements of a good connector design are as follows: Low coupling
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Photoelectric sensor A photoelectric sensor is a device used to detect the distance, absence, or presence of an object by using a light transmitter, often infrared or LED, and a photoelectric receiver. Photoelectric sensors respond to the presence of all types of objects, be it larger, small, transparent or opaque, shiny or dull, static or
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