橡胶,塑料软管和管材.曲挠性和刚性的测量.第1部分:环境温度下的弯曲试验

[中文适用范围]： 本文件规定了测量橡胶和塑料软管和管材挠性的三种方法（方法 A1、B 和 C1），其中测量软管或管材的变形，以及两种测量刚度的方法（方法 A2 和 C2）：测量在环境温度下将橡胶或塑料软管或管材弯曲至特定半径所需的力。 方法A1和A2适用于内径80毫米以下的橡胶和塑料软管和管材。 方法 A1 允许通过测量软管在两块板之间受压时外径的减小量来测量软管或管道的柔韧性。 方法 A2 提供了一种测量当软管或管道被压缩时（如两块板之间）达到特定弯曲半径所需的力的方法。 测试可以在规定的内部压力下进行。 方法 B 适用于内径不超过 100 毫米的橡胶和塑料软管和管材，并提供了一种评估软管和管材绕心轴弯曲时的性能的方法。 最终使用的心轴直径可作为软管或管材的最小弯曲半径。 由于该值是通过外径的减少来确定的，因此它可以用作软管或管材柔韧性的衡量标准。 被测试的软管或管材可以是未加压的、加压的或在真空下，并且如果需要的话，可以具有曲率或逆着软管或管材的曲率（如果存在这样的曲率）。 方法C1和C2适用于内径100毫米及以上的橡胶和塑料软管和管材。 方法 C1 提供了一种确定软管和管材在最小弯曲半径下的柔韧性的方法。 方法 C2 提供了一种测量软管和管材在最小弯曲半径下的刚度的方法。 [外文原描述]： ISO 10619-1:2017 specifies three methods for measuring the flexibility of rubber and plastics hoses and tubing (methods A1, B and C1), where the deformation of the hose or tubing is measured, and two methods for measuring the stiffness (methods A2 and C2) by measuring the force required to bend rubber or plastics hoses or tubing to a specific radius at ambient temperature. Methods A1 and A2 are suitable for rubber and plastics hoses and tubing with inside diameter of up to and including 80 mm. Method A1 allows the measurement of the flexibility of the hose or tubing by measuring the reduction in outside diameter when the hose is compressed between two plates. Method A2 provides a means of measuring the force required to reach a specific bend radius when the hose or tubing is compressed, as between two plates. The test can be carried out at a specified internal pressure. Method B is suitable for rubber and plastics hoses and tubing with inside diameter of up to and including 100 mm, and provides a means of assessing the behaviour of the hose and tubing when bent around a mandrel. The final mandrel diameter used can be taken as the minimum bend radius of the hose or tubing. As this value is determined by the reduction of the outside diameter, it can be used as a measure of the flexibility of the hose or tubing. The hose or tubing being tested can be unpressurized, pressurized or under vacuum and, if required, with the curvature or against the curvature of the hose or tubing, if such curvature is present. Methods C1 and C2 are suitable for rubber and plastics hoses and tubing with inside diameter of 100 mm and greater. Method C1 provides a means of determining the flexibility of the hose and tubing at the minimum bend radius. Method C2 provides a method of measuring the stiffness of the hose and tubing at the minimum bend radius.