High-performance tensile testing machine

所需的高性能拉伸试验机是根据欧洲标准开发胶合板、交叉层压木材和结构木材生产中的木材薄板强度等级不可或缺的。它可以将分级参数（如结尺寸、自然频率测量、纤维偏差、在树干中的位置等）与拉伸强度和拉伸弹性模量相关联。这些知识可以用来预测上述建筑材料的强度。使用这些强度值，工程师可以计算承重结构-建筑应用的基础。抗拉强度的测定对于所谓的指接也是必不可少的-指接是木材的纵向接头，用于生产“无限”长度的木材。如果没有这些试验，就不可能为天然林的山毛榉、橡木或桦木等木材的建设性使用制定出规范性基础。最近一次联邦森林清查和对德国未来木材供应的预测预测表明，硬木的供应量将急剧增加，软木的供应量将减少。德国建筑业几乎100%使用软木建造屋顶桁架、木屋、外墙、桥梁和霍尔斯屋顶结构。木材在建筑中的使用不断增加。不再可用的软木资源不容易被硬木取代。在强度分级、不同产品的一般强度参数、产品的粘合和长期性能方面缺少重要的科学基础。最后但并非最不重要的是，一旦建立了基本知识，就必须制定标准。如果没有大规模的拉伸试验，这一切都是不可能的。使用所申请的高性能拉伸试验机，可以生成特征拉伸强度值-独立于慕尼黑、比尔（瑞士）和格拉兹（奥地利）的几台可比较的机器，这些机器都在满负荷运行。

The requested high-performance tensile testing machine is indispensable for the development of strength gradings for wood lamellas for the production of glued laminated timber, cross laminated timber and structural timber according to European standards. It makes it possible to correlate grading parameters such as knot size, natural frequency measurement, fiber deviation, position in the tree trunk (and similar) with tensile strengths and tensile modulus of elasticity. This knowledge can then be used to predict the strength of the above mentioned building materials. Using these strength values, engineers can then calculate load-bearing structures - the basis for a building application. Determination of the tensile strength is also essential for the so-called finger-jointing - a longitudinal joint of wood, which is used to produce timber of "endless" length. Without such tests it is not possible to work out the normative basis for the constructive use of, for example, beech, oak or birch wood from native forests.The last Federal Forest Inventory and the forecasts for the future availability of wood in Germany predict a sharp increase in the availability of hardwoods and a reduction in the availability of softwoods. The German construction industry uses almost 100% softwood for the construction of roof trusses, wooden houses, facades, bridges and roof structures of halls. The use of wood in construction is constantly increasing. The softwood resources that are no longer available cannot easily be replaced by hardwoods. Important scientific fundamentals are missing in the field of strength grading, general strength parameters of different products, bonding and long-term behaviour of the products. Last but not least, once the basic knowledge has been established, standards must be developed. All this is not possible without large scale tensile tests. With the high-performance tensile testing machine applied for, characteristic tensile strength values could be generated - independent from the few comparable machines, which can be found in Munich, Biel (Switzerland) and Graz (Austria) and which are running at full capacities.