ISO 6892金屬材料的拉伸測試
ISO 6892明訂了室溫條件下以拉伸方法測定金屬材料機械性能的測試方法。該方法中，對試樣進行拉伸直至斷裂，以達到測定一項或多項機械性能。根據該標準測試的產品包括金屬板、片材、絲、棒以及管。試樣夾持要確保軸向受力，儘量減少彎曲，然後對試樣進行拉伸應變至破壞，負載和應變資料會被記錄。
標準提供了測試試樣的兩種方法。第一種方法中採用應變速率控制，減小測定應變速率敏感參數時速率的變化，第二種方法中測試速率用應力速率來控制。測試方法和速率控制方法由實驗室而定，但在測試結果報告中必須清晰地說明。
標準還針對電腦控制的拉伸測試機給出了試樣類型和尺寸的建議，以及估計量測不確定度的方法。量測結果通常包含降伏、保證強度、極限拉伸強度和斷裂的伸長率。
個典型的測試系統，包括一臺萬能測試機，如我們的5900系列，配備相應的楔型或液壓夾具以及夾式延伸計或自動延伸計。此處我們採用250 kN DuraSync夾具和自動接觸延伸計AutoX 750來測試狗骨狀的金屬試樣。同時採用AutoX 750引伸計與Bluehill® 3.31軟體就能完全實現自動應變控制。
我們建議您檢閱標準以徹底瞭解測次方法以及結果需求。
ISO 6892-1:2016 Ambient Tensile Testing of Metallic Materials
The imminent release of ISO 6892-1:2016 will provide further clarification on the significant changes that were introduced in ISO 6892-1:2009, including the testing rates based on strain rate (Method A). To better clarify the requirements of Method A, ISO 6892-1:2016 now includes two clearly defined approaches, Method A1 (Closed-Loop Strain Control) and Method A2 (Constant Crosshead Separation Rate).
- Whitepapers
- 4/18/2016
- 0.5 MB
ISO 6892-1:2009 Whitepaper : Metallic Materials for Tensile Testing
This whitepaper provides an in-depth description of how the new standard replaces both the previous version of ISO 6892 and the widely-used EN 10002-1:2001 standard. It is highly relevant reading for anyone performing tensile tests on metallic materials. Instron testing machines are able to meet the demanding requirements of ISO 6892-1:2009, both Method A, based on strain rate control, and Method B, based on stress rate.
- Whitepapers
- 2/14/2013
- 374.7 KB
Automatic Contacting Extensometer - Model AutoX 750
The AutoX 750 is a high-resolution, long-travel automatic contacting extensometer. It can be mounted onto any electromechanical 3300, 5500, or 5900 table top and floor model systems, as well as LX, DX, HDX, and KN static hydraulic testing systems. It is well suited for applications involving plastics, metals, biomedical, composites, elastomers, and more. The AutoX has a maximum travel of 750 mm and accuracy of ± 1 µm.
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- 8/15/2013
- 1.4 MB
Industrial Series LX Models
Featuring a large, single test space and single footprint, LX Models are designed for high-capacity tension, compression, bend/flex, and shear testing.
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- 11/20/2017
- 0.5 MB
5900 Series Premier Testing Systems Brochure
5900 Universal Testing Systems are engineered for precision, built for durability, and offer the flexibility for changing requirements. They are designed with standard and optional features that increase testing efficiency and improve the testing experience for the operator. A wide range of models are available for testing capacities from < 100N up to 600kN.
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- 1/22/2019
- 6.8 MB
Bluehill Universal Brochure
Bluehill Universal Software is built from the ground-up for touch interaction and an intuitive user experience. Discover simpler and smarter testing with features such as pre-loaded test methods, QuickTest in seconds, enhanced data exporting: and Instron Connect – a new feature that provides a direct communication link to Service. Users of previous versions of software such as Bluehill 2 and Bluehill 3 can easily upgrade to the newest version of Bluehill.
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- 2/26/2017
- 2.6 MB