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GB/T1040.4-2006試驗機拉伸纖維增強複合材料

作者：來源：发布日期： 2020.10.20

信息摘要：

GB/T1040.4-2006試驗機拉伸纖維增強複合材料

增强纤维，包括玻璃纤维、碳纤维、聚芳酰胺纤维等，纤维增强热固性和热塑性复合材料，及其材料制作的成品，按国标GB/T 1040.4-2006，有特殊的拉伸性能测试要求。

其測試原理見GB/T1040.1-2006第三章。

需測試的主要項目包括拉伸應力、拉伸強度、拉伸應變、彈性模量、泊松比等。

在試樣的制作時應注意，纖維增強複合材料的性能常隨著片材板面的方向不同而變化，因此，推薦分別按與主軸平行和垂直兩個方向制備兩組試樣，以測定從材料結構或從其生産工藝知識所推斷的一些特性的方向性。

此類材料的拉伸試驗，對試驗機夾具有較高要求，試樣的制作應與之相配合，放置試樣夾持時打滑或在夾具中破壞。

此類材料要求試驗機的精度也較高，最好使用0,.5級精度的試驗機，以確保試驗的精確度。

圖爲1B型試樣圖例：

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The Curate, of course, had heard nothing about the Clockwork man's other performances; he had scarcely heeded the hints thrown out about the possibility of movement in other dimensions. It seemed to him, in the uncertain light of their surroundings, that the Clockwork man's right arm gradually disappeared into space. There was no arm there at all. Afterwards, he remembered a brief moment when the arm had begun to grow vague and transparent; it was moving very rapidly, in some direction, neither up nor down, nor this way or that, but along some shadowy plane. Then it went into nothing, evaporated from view. And just as suddenly, it swung back into the plane of the curate's vision, and the hand at the end of it grasped a silk hat. Good fitting is often not so much a question of skill as of the standard which a workman has fixed in his mind, and to which all that he does will more or less conform. If this standard is one of exactness and precision, all that is performed, whether it be filing, turning, planing, or drawing, will come to this standard. This faculty of mind can be defined no further than to say that it is an aversion to whatever is imperfect, and a love for what [171] is exact and precise. There is no faculty which has so much to do with success in mechanical pursuits, nor is there any trait more susceptible of cultivation. Methodical exactness, reasoning, and persistence are the powers which lead to proficiency in engineering pursuits. I was the only civilian in that road, and the soldiers, with much curiosity, stared at me. Whenever I noticed an officer, I gave an elaborate military salute, and with such an air that the officers, although hesitating at first, did not fail to return the salute. The reformed system of education was to be not only moral and religious but also severely scientific. 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