欧洲杯足球竞彩材料测试是一种完善的技术，用于确定从人头发到钢，复合材料和陶瓷的原材料和组件的物理和机械性能。
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To meet the challenges posed in testing a wide diversity of materials, Lloyd Instruments offers a comprehensive range of high performance materials testing machines, designed to make accurate and repeatable force measurements in the range from 0.1 N to 300 kN (0.0225 lbf - 67443 lbf). Depending on the machine, elongations of between 1 micron and 2.5 m (98.4 in) can be measured.
Introduction
最近在世界网球比赛中的史诗般的比赛，例如2008年的男子温网决赛，以及2009年的美国公开赛决赛，两场比赛都进行了艰苦的五盘，强调了现代网球球拍和弦乐所经历的非凡压力和压力。
Huge impacts are experienced from serving at speeds up to 140 mph, together with a range of other forces resulting from the breadth of spin shots, drop shots, lobs and smashes that occur during the course of a single game. As racket heads have become larger and frames have become lighter, an even greater demand has been placed on the strings.
Material testing of tennis, badminton and squash rackets helps racket manufacturers assess quality during production, with measurements such as impact strength, durability, fatigue, torsion strength and flex being important tests for quality assurance.
此外，拉伸测试在弦生产中起着重要作用。弦技术英国，网球球拍的专业供应商使用LFPlus materials testing machinefrom Lloyd Instruments for checking the tensile strength, elongation at break, knot strength and elongation percentage of strings at given loads.
字符串的功能和性能
Whilst the construction of the racket itself is of great importance, string selection can significantly influence the performance of a given racket. Strings are available in a variety of materials and gauges. In general, thick strings are more durable, while thinner strings tend to have a better “feel” and bite the ball better, helping to impart spin.
In addition, string tension can be set to optimize the power, spin, lifetime and even the feeling on the arm. Synthetic strings such as polyester, co-poly monofilament and hybrid strings provide an alternative to traditional nylon and gut strings.
Polyester & Co-Poly Monofilament Strings
聚酯和共同基单丝弦是弦乐市场增长最快的领域，主要是由于价格低廉，耐用性高，并且可以从“成本效益”到“高性能”的各种等级。
聚酯串是由单个聚合物制成的，而共硅丝是2个或多个聚合物的混合物，可以实现更高的规格。它们通常具有不同的仪表（1.17-1.35mm）的不同弹性/耐用性水平。聚酯比较尼龙或多丝相比非常僵硬，但提供了明显更好的耐用性，从而可以使用更薄的仪表。
The new co-poly monofilaments are however getting much softer and easier to string. Multifilament strings consist of many microfibres (which can be of many different materials) twisted together to form a string, which is wrapped with a resistant cover to give a performance more like natural gut.
String Testing
During the manufacturing process (extrusion) of co-polyester monofilament tennis strings, over 30 quality checks are made, starting with the raw material through to the final collection of the material onto drums.
英国String Technology UK通过在准备零售分配的弦乐处理过程中添加拉伸测试来扩展质量检查。英国String Technology在全球范围内提供网球球拍弦。该公司指定该产品通过“内部”品牌，包装打印和卷轴设计为零售商增加价值，以立即成为可识别的品牌。
Tensile Testing
String Technology UK uses an LFPlus single column materials testing machine from Lloyd Instruments for tensile testing, operating under computer control using NEXYGENPlusmaterial test and data analysis software.
该仪器装有2KN号角握把。进行测试以测量拉伸强度，断裂时伸长，打结强度和伸长率在给定负载下的百分比。伸长以45公斤力测量，以复制撞击弦的球。
测量结的强度，因为如果太低，弦将断开。在处理过程中定期进行全面测试（500个样品中的1个）加上产品进行进一步分析。未来的测试将包括一个负载然后放松周期，以允许测量张力损失。
Although there is no specific testing standard for tensile testing of tennis racket strings, the NEXYGENPlus软件根据国际标准提供了广泛的预定测试设置库，以及设置常规测试或创建高级多阶段测试的设施，并能够监视数据分析的所有方面。
LFPlusMaterial Testing Machine
The LFPlus单列通用材料测试机是一种易于使用的解决方案，用于欧洲杯足球竞彩材料测试应用，最多1 kN（225 lbf）。该机器使用高精度可互换的XLC系列负载单元。通过骑自行车进行负载和扩展限制的张力和压缩测试是标准功能。
The machine features an innovative design that maximises working space. The LFPlus具有带有膜多功能键盘的积分控制控制台，并易于读取背光LCD以显示负载和扩展信息。控制控制台显示提示和菜单，这些提示和菜单引导用户通过机器操作。
The system is capable of storing up to 600 test results from a choice of 10 programmable test set-ups. Machine performance can be optimised under computer control usingNEXYGENPlus material test and data analysis software。测试信息可以轻松地导出到Microsoft®产品，例如Word，Excel®和Outlook®。
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NEXYGENPlus Material Test And Data Analysis Software
NEXYGENPlusis extraordinarily easy to use, flexible, multi-lingual materials testing software. It allows the operator to control and monitor all aspects of the system from a single front end, ensuring fast, reliable and powerful testing and data analysis for tensile testing, as well as compression, peeling, tearing, creep, relaxation and flexural test applications.
With NEXYGENPlussoftware, the user can simply select from the extensive library of pre-defined test set-ups based on international standards to set up routine tests or create an advanced multi-stage test, all using the same program. Still picture and video capture are also included in the software as well as a powerful security and audit trail module to provide 100% traceability, full automation capability for automatic testing and much more.
Summary
A complex set of variables influence the performance of a tennis racket. Players from the top professionals to the weekend player have their preferences. The application of materials testing as part of the quality control procedures brings enhanced levels of repeatability from batch to batch.
This information has been sourced, reviewed and adapted from materials provided by Lloyd Instruments Ltd.
有关此消息来源的更多信息，请访问Lloyd Instruments Ltd.