[en] Small-scale mechanical testing on irradiated materials is gaining popularity in the nuclear materials community due to the fact that mechanical property changes can be evaluated from shallowly ion-beam-irradiated materials as well as from small volumes of reactor-irradiated components. While the obvious benefits of accelerated research and reduction of radiation exposure are gained through these methods, these methods also target specific microstructural areas of interest. This paper presents a summary of current techniques that are utilized and outlines a path towards a more thorough understanding of small volume testing on irradiated materials.

[en] A nondestructive ultrasonic technique is presented for estimating the reinforcement volume fractions of particulate composites. The proposed technique employs a theoretical model which accounts for composite microstructures, together with a measurement of ultrasonic velocity to determine the reinforcement volume fractions. The approach is used for a wide range of SiC particulate reinforced Al matrix (SiC_p/AI) composites. The method is considered to be reliable in determining the reinforcement volume fractions. The technique could be adopted in a production unit for the quality assessment of the metal matrix particulate composite extrusions

[en] The use of industrial radiology techniques id very important for military explosive fabrication. The cylindrical-ogive bodies made in forged metal have their interior fulfilled with high melted explosive and they must explode when they reach the target. The granades, as these bodies are called, are thrown by cannons and their interior are submitted to high pressures and accelerations which can cause a premature detonation, in most case, in interior of tube, in case of they have defects in explosive mass. The origins of defects, its localization and classification presenting the techniques used and disposable in Brazil are discussed. (M.C.K.)

[en] Experiences got from the use of NDT in inspection-repairing of boiler AE-101 of fertilizers Plant-Talara is presented after failures by pipes breakage. Applying liquid penetrant testing and visual inspection it was possible to determine the seriousness of the equipment the use of metallographic copies, ultrasonic measurements and hardness gave us an idea of the actual condition of the equipment, allowing a safe performance

[en] Published in summary form only

[en] Radiography of defects is discussed with particular reference to techniques, sensitivity and image processing. (U.K.)

[en] These proceedings contain 67 communications of which 21 have been analyzed and indexed separately. Methods which are nuclear or applied to the nuclear field (e.g. reactors) are the main part of the subjects covered

[en] A formalism for analyzing the reliability R of an interval for system probability of failure and its confidence C from the component R-C intervals is outlined. In the general formalism one must obtain the network representation of the system with path failure probabilities indicated, derive by an algorithm a representation of the system by disjoint paths, declare an R-reliable interval for each component probability of failure, and derive the confidence in that interval. This formalism is developed with reference to aircraft engine component retirement-for-cause. The network diagram consists of paths for various rotor components. R-C intervals for the path state probabilities and for the system probability failures are calculated. The final solution involves sums and products of a number of integrals which can be quickly evaluated by an integration logorithm

[en] The last ASTM Standard E94 which classified Industrial Radiography films was published in 1984. Since that time inspection contracts in US and worldwide have continued to specify Type 1 and Type 2 films--although these no longer exist. From 1990 there was discussion within ASTM and work was done by ASTM Committee E07-01. The method proposed used data on graininess and gradient to produce an index to represent quality. In the early version the author found that it was possible to have a very fine grain low-contrast film with the same index as a fine grain film, with high contrast. The draft standard was then developed, so that it is possible to classify both types of film in separate groups. The first is the Classical type of film and the second is a Wide Latitude film. In a Classical film, the contrast increases over the useable density range. The range of application standards specify densities generally from D = 2.0 to D = 4.0. A radiologist would expect contrast to be higher at D = 4.0 compared with contrast at D = 2.0. The new ASTM film classification uses a signal to noise ratio--with minimum values for each class for contrast and a maximum value for graininess. The ASTM Classification System uses the same parameters as the European Standard EN584-1 and ISO CD

No abstract available