ASTM F2971:2013- Standard Practice for Reporting Data for Test Specimens Prepared by Additive Manufacturing

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ASTM F2971:2013- Standard Practice for Reporting Data for Test Specimens Prepared by Additive Manufacturing

استاندارد ASTM G181 در خصوص Conducting Friction Tests of Piston Ring and Cylinder Liner Materials Under Lubricated Conditions

اختصاصی از حامی فایل استاندارد ASTM G181 در خصوص Conducting Friction Tests of Piston Ring and Cylinder Liner Materials Under Lubricated Conditions دانلود با لینک مستقیم و پر سرعت .

استاندارد ASTM G181

در خصوص

Standard Test Method for

Conducting Friction Tests of Piston Ring and Cylinder Liner Materials Under Lubricated Conditions

نسخه 2011

10 صفحه

Scope
1.1 This test method covers procedures for conducting
laboratory bench-scale friction tests of materials, coatings, and
surface treatments intended for use in piston rings and cylinder
liners in diesel or spark-ignition engines. The goal of this
procedure is to provide a means for preliminary, cost-effective
screening or evaluation of candidate ring and liner materials. A
reciprocating sliding arrangement is used to simulate the
contact that occurs between a piston ring and its mating liner
near the top-dead-center position in the cylinder where liquid
lubrication is least effective, and most wear is known to occur.
Special attention is paid to specimen alignment, running-in,
and lubricant condition.
1.2 This test method does not purport to simulate all aspects
of a fired engine’s operating environment, but is intended to
serve as a means for preliminary screening for assessing the
frictional characteristics of candidate piston ring and liner
material combinations in the presence of fluids that behave as
use-conditioned engine oils. Therefore, it is beyond the scope
of this test method to describe how one might establish
correlations between the described test results and the frictional
characteristics of rings and cylinder bore materials for specific
engine designs or operating conditions.
1.3 The values stated in SI units are to be regarded as
standard. No other units of measurement are included in this
standard.
1.4 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.

ASTM D 7337:2012-Standard Test Method for Tensile Creep Rupture of Fiber Reinforced Polymer Matrix Composite Bars

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ASTM D 7337:2012-Standard Test Method for Tensile Creep Rupture of Fiber Reinforced Polymer Matrix Composite Bars

دانلود استاندارد ASTM پارت 8

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دانلود پارت 8 استاندارد ASTM (استانداردهای کنترل ولو و شیرآلات کنترلی)

ASTM Standard -Part 8- Control Valves

فرمت فایل: PDF

حجم فایل: 13.44 مگابایت

برای دانلود استاندارد ASTM به صورت کامل (10 پارت)

استاندارد ASTM E709 در خصوص تست ذرات مغناطیسی MT - Magnetic Particles - نسخه 2008

اختصاصی از حامی فایل استاندارد ASTM E709 در خصوص تست ذرات مغناطیسی MT - Magnetic Particles - نسخه 2008 دانلود با لینک مستقیم و پر سرعت .

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استاندارد ASTM E709

توضیح کامل تست ذرات مغناطیسی 

   MT  - Magnetic Particles  

یکی از تست های غیر مخرب

نسخه 2008

41 صفحه

Standard Guide for
Magnetic Particle Testing

Scope
1.1 This guide describes techniques for both dry and wet
magnetic particle testing, a nondestructive method for detect-
ing cracks and other discontinuities at or near the surface in
ferromagnetic materials. Magnetic particle testing may be
applied to raw material, semifinished material (billets, blooms,
castings, and forgings), finished material and welds, regardless
of heat treatment or lack thereof. It is useful for preventive
maintenance testing.
1.1.1 This guide is intended as a reference to aid in the
preparation of specifications/standards, procedures and tech-
niques.
1.2 This guide is also a reference that may be used as
follows:
1.2.1 To establish a means by which magnetic particle
testing, procedures recommended or required by individual
organizations, can be reviewed to evaluate their applicability
and completeness.
1.2.2 To aid in the organization of the facilities andpersonnel concerned in magnetic particle testing.
1.2.3 To aid in the preparation of procedures dealing with
the examination of materials and parts. This guide describes
magnetic particle testing techniques that are recommended for
a great variety of sizes and shapes of ferromagnetic materials
and widely varying examination requirements. Since there are
many acceptable differences in both procedure and technique,
the explicit requirements should be covered by a written
procedure.

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