GB/T 1843-2008 塑料 悬臂梁冲击强度的测定
简介:
信息:ICS: CCS:G32 发布: 实施:2009-04-01
ASTM D256-00e1 测定塑料悬臂梁式摆锤冲击强度的标准试验方法
简介:
信息:ICS:29.035.20 CCS: 发布:2000-11-10 实施:
ASTM D4812-19 塑料悬臂梁抗冲击强度的标准试验方法
简介:
信息:ICS:83.140.99 CCS: 发布:2019-10-01 实施:
JIS K7110-1999 塑料.悬臂梁式冲击强度的测定
简介:1.1この規格は,定められた条件下でのプラスチックのアイゾット衝撃強さを試験する方法について規定する。…
信息:ICS:83.080.01 CCS:G31 发布:1999-08-20 实施:
ASTM D256-10(2018) 测定塑料悬臂梁式摆锤冲击强度的标准试验方法
简介:
信息:ICS:29.035.20 CCS: 发布:2018-11-01 实施:
ASTM D4812-99 塑料无切口悬臂梁冲击强度的标准试验方法
简介:
信息:ICS:83.140.99 CCS: 发布:1999-03-10 实施:
ASTM D4812-11 塑料悬臂梁抗冲击强度的标准试验方法
简介:
信息:ICS:83.140.99 CCS: 发布:2011-12-01 实施:
ASTM D4812-1999 塑料的无凹口悬臂梁抗冲击强度的标准试验方法
简介:1.1 This test method covers the determination of the resistance to breakage by flexural shock of plastics, as indicated by the energy extracted from standardized (Note 1) pendulum-type hammers, mounted in standardized machines, in breaking standard specimens with one pendulum swing. The result of this test is reported in terms of impact strength per unit of specimen width. Note 1-The machines with their pendulum-type hammers have been standardized in that they must comply with certain requirements, including a fixed height of hammer fall that results in a substantially fixed velocity of the hammer at the moment of impact. Hammers of different initial energies (produced by varying their effective weights) are recommended for use with specimens of different impact strengths. Moreover, manufacturers of the equipment are permitted to use different lengths and constructions of pendulums (with resulting possible differences in pendulum rigidities (see Section 4), and other differences in machine design). 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.3 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
信息:ICS:83.140.99 (Other rubber and plastic products) CCS:G31 发布:1999 实施:
ASTM D4812-2011 塑料的无凹口悬臂梁抗冲击强度的标准试验方法
简介:The pendulum-impact test indicates the energy to break standard test specimens of specified size under stipulated conditions of specimen mounting and pendulum velocity at impact. The energy lost by the pendulum during the breakage of the specimen is the sum of the energies required to produce the following results: To initiate fracture of the specimen, To propagate the fracture across the specimen, To throw the free end (or pieces) of the broken specimen (toss correction), To bend the specimen, To produce vibration in the pendulum arm, To produce vibration or horizontal movement of the machine frame or base, To overcome friction in the pendulum bearing and in the indicating mechanism, and to overcome windage (pendulum air drag), To indent or deform plastically the specimen at the line of impact, and To overcome the friction caused by the rubbing of the striking nose (or other part of the pendulum) over the face of the bent specimen. For relatively brittle materials for which fracture propagation energy is small in comparison with the fracture initiation energy, the indicated impact energy absorbed is, for all practical purposes, the sum of items given in 5.2.1 and 5.2.3. The toss correction (5.2.3) may represent a very large fraction of the total energy absorbed when testing relatively dense and brittle materials. For materials for which the fracture propagation energy (5.2.2) may be large compared to the fracture initiation energy (5.2.1), factors (5.2.2, 5.2.5, and 5.2.9) can become quite significant, even when the specimen is accurately machined and positioned and the machine is in good condition with adequate capacity (Note 3). Bending (5.2.4) and indentation losses (5.2.8) may be appreciable when testing soft materials. Note 38212;Although the frame and base of the machine should be sufficiently rigid and massive to handle the energies of tough specimens without motion or excessive vibration, the pendulum arm cannot be made very massive because the greater part of its mass must be concentrated near its center of percussion at the striking nose. Locating the striking nose precisely at the center of percussion reduces vibration of the pendulum arm when used with brittle specimens. However, some losses due to pendulum-arm vibration, the amount varying with the design of the pendulum, will occur with tough specimens even when the striking nose is properly positioned. In a well-designed machine of sufficient rigidity and mass the losses due to the items given in 5.2.6 and 5.2.7 should be very small. Vibrational losses (5.2.6) can be quite large when specimens of tough materials are tested in machines of insufficient mass which are not securely fastened to a heavy base. This test method requires that the type of failure for each specimen be recorded as one of the three coded categories defined as follows: C (Complete Break)A break in which the specimen is separated into two or more pieces. P (Partial Break)An incomplete break that has fractured at least 90 % of the depth of the specimen. NB (Non-Break)An incomplete break where the fracture extends less than 90 % of the depth of the specimen. For tough materials the pendulum may not have the energy necessary to completely break the extreme outermost fibers and toss the broken piece or pieces. Results obtained from x201C;non-breakx201D; specimens shall be considered a departure from standard and shall be reported as x201C;NBx201D; only and a numerical value shall not be reported. Impact values cannot be directly compared for any two mater...........
信息:ICS:83.140.99 (Other rubber and plastic products) CCS:G31 发布:2011 实施:
STAS 7310-1987 硬质塑料.悬臂梁冲击强度测定
简介:1.1 Prezentul standard stabile?te metoda de determinare a rezisten?ei la ?oc Izod a, materialelor plastice rigide.Metoda este destinat? aprecierii tenacit??ii sau fragilit??ii epruvetelor, ?n limitele stabilite ?n condi?iile de ?ncercare,1.2
信息:ICS: CCS: 发布:1987-02-01 实施:
ASTM D256-10 测定塑料悬臂梁式摆锤冲击强度的标准试验方法
简介:
信息:ICS:29.035.20 CCS: 发布:2010-05-01 实施:
ASTM D256-10e1 测定塑料悬臂梁式摆锤冲击强度的标准试验方法
简介:
信息:ICS:29.035.20 CCS: 发布:2010-05-01 实施:
ASTM D256-06a 测定塑料悬臂梁式摆锤冲击强度的标准试验方法
简介:
信息:ICS:29.035.20 CCS: 发布:2006-12-01 实施:
ASTM D256-06ae1 测定塑料悬臂梁式摆锤冲击强度的标准试验方法
简介:
信息:ICS:29.035.20 CCS: 发布:2006-12-01 实施:
ASTM D4812-06 塑料悬臂梁抗冲击强度的标准试验方法
简介:
信息:ICS:83.140.99 CCS: 发布:2006-03-15 实施:
ASTM D256-06 测定塑料悬臂梁式摆锤冲击强度的标准试验方法
简介:
信息:ICS:29.035.20 CCS: 发布:2006-03-15 实施:
ASTM D4812-2006 塑料的无凹口悬臂梁抗冲击强度的标准试验方法
简介:1.1 This test method covers the determination of the resistance of plastics to breakage by flexural shock, as indicated by the energy extracted from standardized pendulum-type hammers, mounted in standardized machines, in breaking standard specimens with one pendulum swing. The result of this test method is reported as energy absorbed per unit of specimen width.Note 1The pendulum-type test instruments have been standardized in that they must comply with certain requirements, including a fixed height of hammer fall that results in a substantially fixed velocity of the hammer at the moment of impact. Pendulums of different initial energies (produced by varying their effective weights) are recommended for use with specimens of different impact strengths. Moreover, manufacturers of the equipment are permitted to use different lengths and constructions of pendulums (with resulting possible differences in pendulum rigidities (see Section ), and other differences in machine design).1.2 The values stated in SI units are to be regarded as standard. The values given in brackets are for information only.This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.Note 2This standard and ISO 180, Method 1U, are similar in content but are not technically equivalent.
信息:ICS:83.140.99 (Other rubber and plastic products) CCS:G31 发布:2006 实施:
ASTM D4812-05 塑料无切口悬臂梁冲击强度的标准试验方法
简介:
信息:ICS:83.140.99 CCS: 发布:2005-11-01 实施:
ASTM D256-05a 测定塑料悬臂梁式摆锤冲击强度的标准试验方法
简介:
信息:ICS:29.035.20 CCS: 发布:2005-11-01 实施:
ASTM D256-05 测定塑料悬臂梁式摆锤冲击强度的标准试验方法
简介:
信息:ICS:29.035.20 CCS: 发布:2005-01-01 实施:
ASTM D4812-2005 塑料的无凹口悬臂梁抗冲击强度的标准试验方法
简介:1.1 This test method covers the determination of the resistance of plastics to breakage by flexural shock, as indicated by the energy extracted from standardized pendulum-type hammers, mounted in standardized machines, in breaking standard specimens with one pendulum swing. The result of this test method is reported as energy absorbed per unit of specimen width.Note 1The pendulum-type test instruments have been standardized in that they must comply with certain requirements, including a fixed height of hammer fall that results in a substantially fixed velocity of the hammer at the moment of impact. Pendulums of different initial energies (produced by varying their effective weights) are recommended for use with specimens of different impact strengths. Moreover, manufacturers of the equipment are permitted to use different lengths and constructions of pendulums (with resulting possible differences in pendulum rigidities (see Section ), and other differences in machine design).1.2 The values stated in SI units are to be regarded as standard. The values given in brackets are for information only.This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.Note 2This standard and ISO 180, Method 1U, are similar in content but are not technically equivalent.
信息:ICS: CCS:G31 发布:2005 实施:
ASTM D256-04 测定塑料悬臂梁式摆锤冲击强度的标准试验方法
简介:
信息:ICS:29.035.20 CCS: 发布:2004-05-01 实施:
ASTM D256-03 测定塑料悬臂梁式摆锤冲击强度的标准试验方法
简介:
信息:ICS:29.035.20 CCS: 发布:2003-12-01 实施:
ASTM D256-02e1 测定塑料悬臂梁式摆锤冲击强度的标准试验方法
简介:
信息:ICS:29.035.20 CCS: 发布:2002-08-10 实施:
ASTM D256-02 测定塑料悬臂梁式摆锤冲击强度的标准试验方法
简介:
信息:ICS: CCS: 发布:2002-08-10 实施: