6.4所有试样的表面应避免可见的裂缝、刮痕或不足,通过粗糙的机器操作作留下的记号,应用一个好的方案或研磨除去并且挫平的表面用D号或更好一点的磨纸来使之光滑,完成的冲程应和试验样品长轴方向平行,所有的毛边应从模塑样品中除去,应非常小心不去刮坏模塑表面,在加工样品时,超过如图1显示的尺寸的公差发底切应尽量...
FIG 3 Diagram showing location of rod tension test specimen in testing maching 图形3在试验机上的条状拉伸试验样品的位置显示图 DIMENSIONS OF ROD SPECIMENS 条状试样的尺寸 Norminal Diamter标准直径 Total calculated Niminun Length of Specimen 试样的总共计算的最小长度 ...
FIG 3 Diagram showing location of rod tension test specimen in testing maching 图形3在试验机上的条状拉伸试验样品的位置显示图 DIMENSIONS OF ROD SPECIMENS 条状试样的尺寸 Norminal Diamter标准直径 Total calculated Niminun Length of Specimen 试样的总共计算的最小长度 ...
ASTM/D638-91塑料拉伸性能的标准试验方法 1.范围 1.1当在预处理、温度、湿度和试验机速度预先定义的条件下进行试验,这个试验包含标准的哑铃形试样的没有增强型和增强型的塑料的拉伸性能的测定。 1.2这个试验方法可被使用于任何厚度到0.55inch(14mm)的试验材料,然而对于薄片形式的试验样品,包括小于0.04inch(1.0)厚度...
MaterialsD 5947 Test Methods for Physical Dimensions of SolidPlastic SpecimensE 4 Practices for Force Verif i cation of Testing MachinesE 83 Practice for Verif i cation and Classif i cation of Exten-someterE 132 Test Method for Poisson’s Ratio at Room Tempera-tureE 691 Practice for Conducting...
They have different specimen dimensions and geometries. The testing speeds and strain rates specified in the standards can differ. The environmental conditions specified for testing (such as temperature and humidity) may vary. The data analysis and reporting requirements can differ between the two stand...
D638Test Method for Tensile Properties of Plastics 3.Summary of Test Method 3.1A sample of freshly mixed concrete is placed and compacted by rodding in a mold shaped as the frustum of a cone.The mold is raised,and the concrete allowed to subside.The vertical distance between the original ...
内容提示: Designation: D638 – 10Standard Test Method forTensile Properties of Plastics 1This standard is issued under the f i xed designation D638; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revision. ...
Designation: D638 – 10 Standard Test Method for Tensile Properties of Plastics1 This standard is issued under the fixed designation D638; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. A number...
(mm/mm). For each tensile test, the machine was calibrated. The testing was conducted until the specimens fractured. Stress (MPa) values were obtained by diving the load byA. See Fig.3for sectional views of specimenTypes CandFin Cura and images of the corresponding fractured specimens after...