ASTM D2261 单舌法测定织物的撕破强力

ASTM D2216 tear testing of fabric

Originally introduced in 1964, ASTM D2261 was most recently updated in 2013 and specifies the method for tear testing of fabrics by the tongue (single rip) procedure to measure the tearing strength of the fabric. This test method applies to most textile fabrics, including those that are treated and untreated, woven, knitted, or unwoven. In this test method, a cut is made in a rectangular specimen, starting a tear. The two sides of the tear are then pulled until failure, with the resulting data reflecting the strength of the yarns, fiber bonds, and fiber interlocks, as well as their resistance to tearing.

Testing System

This standard requires a test frame moving at a constant rate of extension. As with most textiles testing, data rate is an important consideration, and to consistently and accurately measure the tear strength of your material it is important to remember that the data sampling rate needs to be high enough that the test peaks and troughs are adequately captured. Because of this we recommend using a higher tier materials testing system such as Instron's 6800 Series, which offers a 5 kHz data acquisition rate to make sure you never miss a test event. For most textile fabrics testing to ASTM D2261, a single column frame is appropriate as the loads rarely go above 5 kN. Instron’s Bluehill® Universal testing software offers a pre-built test method for ASTM D2261 to simplify your testing and ensure compliance with the standard.

ASTM D2261 Test Setup
1) 68SC-5 Universal Testing System
2) Bluehill Universal Software
3) 2580 Series Load Cell
4) 2712-045 Pneumatic Side-Action Grips


ISO 13934-1 test setup
Grips and Specimen Preparation 

Instron's pneumatic side action grips with rubber faces are well suited to gripping nearly all types of fabric specimens for this test while maintaining high throughput. The specimen can be tested wet or without wetting as well for this standard, and jaw faces must be a minimum of 75mm wide by 25 mm tall. A rectangular specimen is used for this test and must be prepared for by making a cut in it, forming two “tongues". One tongue is placed in the upper grip jaw and one tongue is placed in the lower grip jaw. As the test runs, the jaws move apart and the fabric tears along the pre-cut segment.

Pneumatic side-action grips are the recommended gripping solution due to their ability to send constant pressure to the grips, aiding in the ease of use and repeatability of testing. Users can also easily fine-tune the gripping pressure to avoid jaw breaks or slippage. ASTM D2261 calls out utilizing either rubber coated or serrated jaw faces for testing, but this will primarily depend on the type of fabric being tested. In some cases, serrated jaw faces may be too aggressive and lead to premature jaw breaks. On the other hand, rubber jaw faces can sometimes lead to unwanted specimen extrusion or slippage during testing due to their permeability. The standard also calls out the ability to use medium grit emery cloth for some materials as an additional way to help prevent slippage.

1 kN Model | 2712-041
Related Content

6800 系列 - 万能材料试验系统

Instron 的6800 系列万能材料试验系统提供出色的精度及可靠性。 6800 系列基于正在申请专利的操作员保护架构,具有全新的智能气动控制装置和碰撞保护功能,使材料测试比以往任何时候都更简单、更智能、更安全。

Bluehill Universal 手册

Bluehill Universal 软件专为直观的触摸交互式用户体验而构建。通过预加载试验方法、数秒内的QuickTest、增强数据导出,以及 Instron Connect(一项可与服务工程师直接联系的新功能)等功能去探索更简单、更智能的测试方式。Bluehill 2、 Bluehill 3 等旧版本软件的用户可以轻松升级到最新版本的 Bluehill。

2712-04X 系列气动平推夹具

气动平推夹具适用于各种材料和试样的静态拉伸试验。其载荷范围在 1 至 10 kN之间。