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1 strength of materials and parts
прочность материалов и частей
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[ ГОСТ Р МЭК 61439.1-2013]Параллельные тексты EN-RU
8.1 Strength of materials and parts
8.1.1 General
ASSEMBLIES shall be constructed of materials capable of withstanding the mechanical, electrical, thermal and environmental stresses that are likely to be encountered in specified service conditions.
The external shape of the ASSEMBLY enclosure can vary to suit the application and use, some examples have been defined in 3.3. These enclosures may also be constructed from various materials e.g. insulating, metallic or a combination of these.
[BS EN 61439-1:2009]8.1 Прочность материалов и частей
8.1.1 Общие положения
НКУ должны изготавливаться из материалов, способных выдерживать механические, электрические и тепловые нагрузки, также нагрузки воздействующих факторов окружающей среды, которые обычно имеют место в указанных условиях эксплуатации.
Внешняя форма оболочки НКУ может быть разной в зависимости от назначения и применения. Несколько примеров приведено в 3,3. Оболочки могут быть изготовлены из различных материалов, например из изоляционных металлических или комбинации материалов.
[ ГОСТ Р МЭК 61439.1-2013]
Тематики
- НКУ (шкафы, пульты,...)
EN
Англо-русский словарь нормативно-технической терминологии > strength of materials and parts
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2 Barlow, Peter
SUBJECT AREA: Ports and shipping[br]b. 13 October 1776 Norwich, Englandd. 1 March 1862 Kent, England[br]English mathematician, physicist and optician.[br]Barlow had little formal academic education, but by his own efforts rectified this deficiency. His contributions to various periodicals ensured that he became recognized as a man of considerable scientific understanding. In 1801, through competitive examination, he became Assistant Mathematics Master at the Royal Military Academy, Woolwich, and some years later was promoted to Professor. He resigned from this post in 1847, but retained full salary in recognition of his many public services.He is remembered for several notable achievements, and for some experiments designed to overcome problems such as the deviation of compasses in iron ships. Here, he proposed the use of small iron plates designed to overcome other attractions: these were used by both the British and Russian navies. Optical experiments commenced around 1827 and in later years he carried out tests to optimize the size and shape of many parts used in the railways that were spreading throughout Britain and elsewhere at that time.In 1814 he published mathematical tables of squares, cubes, square roots, cube roots and reciprocals of all integers from 1 to 10,000. This volume was of great value in ship design and other engineering processes where heavy numerical effort is required; it was reprinted many times, the last being in 1965 when it had been all but superseded by the calculator and the computer. In the preface to the original edition, Barlow wrote, "the only motive which prompted me to engage in this unprofitable task was the utility that I conceived might result from my labour… if I have succeeded in facilitating abstruse arithmetical calculations, then I have obtained the object in view."[br]Principal Honours and DistinctionsFRS 1823; Copley Medal (for discoveries in magnetism) 1825. Honorary Member, Institution of Civil Engineers 1820.Bibliography1811, An Elementary Investigation of the Theory of Numbers.1814, Barlow's Tables (these have continued to be published until recently, one edition being in 1965 (London: Spon); later editions have taken the integers up to 12,500).1817, Essay on the Strength of Timber and Other Materials.Further ReadingDictionary of National Biography.FMW -
3 Crimp Fabrics
The term includes such types as the "blister" and the "crepon." These fabrics are used for the making of dress goods, and can be produced in five different ways, namely: (a) by making suitable combinations of slack and tight weaves; (b) unequal warp tension in weaving, the crimp forming warp threads being allowed to weave very slack; (c) by combining two materials having a marked dissimilarity of shrinkage power during wet finishing, i.e., botany wool and mohair; (d) by modifying the weave structure in such a manner as to drop some picks from the main fabric and allow them to float on the back, the effectiveness of this method is enhanced by using a hard-twisted, single weft yarn to assist the contraction; (e) chemical means, such as is produced by printing the cloth in stripes with caustic soda of about 20 per cent strength, thickened with some substance such as starch. The cloth shrinks where printed and the unprinted parts in puckering gives the crimp effect. By dyeing the cloth two tones are obtained as a darker shade is shown where the caustic soda appears (see crepeing and crimps)
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