Chain sampling inspection plans - ChSP-0,4 AND ChSP-1, 4 Technical report no. n-24
Two-stage chain sampling inspection plans
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Two-stage chain sampling inspection plans
Americium 241 serves as a suitable radioisotope /gamma ray source/ and exposure probe for radiographic inspection of brazed aluminum joints in areas of limited accessibility. The powdered isotope is contained in a sealed capsule mounted at the end of a spring-loaded pushrod in the probe assembly.
Thin-walled neoprene containers prevent secondary radiation, scatter, and undercut during radiographic inspection. The containers are filled with a mixture of barium sulfate, red lead, and petroleum jelly that achieves the required absorption rate.
Report details the test and inspection procedures for the mass production of high reliability integrated circuits. It covers configuration control, basic fundamentals of quality control, control charts, wafer process evaluation, general process evaluation, evaluation score system, and diffusion evaluation.
Mechanized X ray equipment provides nondestructive inspection of structural weldments at various positions on very large tanks. It mechanizes the placement of the film, automates the identification process, adheres to safety requirements, and eliminates all the usual time-consuming manual operations in industrial radiography.
Human observations of curvature after-effects as function of magnitude of curvature of inspected material
Tests and inspection procedures for process control of integrated circuits
Electron multiplier, incorporated into the camera tube of an ultrasonic imaging system, improves resolution, effectively shields low level circuits, and provides a high level signal input to the television camera. It is effective for inspection of metallic materials for bonds, voids, and homogeneity.
Investigation of parallel gap soldering of electrical leads resulted in recommendation on material preparation, equipment, process control, and visual inspection criteria to ensure reliable solder joints. The recommendations will minimize problems in heat-dwell time, amount of solder, bridging conductors, and damage of circuitry.
External visual inspection criteria for semiconductor devices
Microwave nondestructive testing technology for inspecting nonmetallic materials and composites and detecting defects beyond air gaps by reflection
X ray TV image enlargement system to perform inspections and failure analysis on electronic parts
Portable fiber optics sensing device which detects surface irregularities in a specific tube flare, permits discrete dimensional measurements to be taken, scanned and read out with only one setup. Capabilities of the instrument can be expanded to include surface inspection of various kinds of tube flares.
Delta technique for ultrasonic weld inspection, noting ability to detect randomly oriented weld defects
Remote disassembly and inspection methods for evaluating NRX-AG reactor components performance
By building a floating isolator box of cork around the test object and using a low frequency transducer, automated conventional C scan equipment is adapted to inspect the object ultrasonically. Vibrations are isolated and reflected noise is reduced.
Hybrid microcircuit quality standards, inspection criteria, and reliability screening
Remote visual inspection system using television fiberscope