f/自行车 2013-07-18 05:40

看看人家是怎么折磨车架的

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凊水无香 2013-07-18 05:43

老鼠货才是硬道理!

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Edline 2013-07-18 06:27

混蛋,逼我上班开视频~~~

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领先数南 Edline 2013-07-24 06:21

同逼~

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badboy250 2013-07-24 06:02

不错不错

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kqh0212 2013-07-24 07:10

强度包括:
(1)抗压强度--材料承受压力的能力;
(2)抗拉强度--材料承受拉力的能力;
(3)抗弯强度--材料对致弯外力的承受能力;
(4)抗剪强度--材料承受剪切力的能力;
(5)疲劳强度--材料在无限多次交变载荷作用下而不破坏的最大应力;
(6)冲击强度--金属材料、机械零件和构件抗冲击破坏的能力;
……
上班时间不敢开视频看,不知道视频中大神是怎么做这些“强度测试”的。

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k846265 2013-07-24 07:58

贫僧竟然找到了车架的测试标准(应该是美国的,反正不是GB,GB没人会看的),贫僧不认为国内厂家会正儿八经地做这些测试。
ASTM F2711-08
Standard Test Methods for Bicycle Frames
1.1 These test methods establish procedures for conducting tests to determine the structural performance properties of bicycle frames.
1.2 These test methods describe mechanical tests for determining the following performance properties:
1.2.1 Frame Fatigue-Horizontal Loading,
1.2.2 Frame Fatigue-Vertical Loading, and
1.2.3 Frame Impact Strength.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.