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Torsion Strength Testing of Hydraulic Tube Joints

2013-01-02
HISTORICAL
ARP4457
This Aerospace Recommended Practice (ARP) establishes uniform requirements and procedures to determine the torsional strength of permanent hydraulic tube joints. It also establishes testing equipment and apparatus for torsion testing.
Standard

Qualification of Hydraulic Tube Joints to Specified Flexure Fatigue Requirements

2019-01-03
WIP
ARP1258C
This SAE Aerospace Recommended Practice (ARP) establishes the method for qualification testing of tube joints and fitting attachments, using the flexure test method described in ARP1185. This qualification test method allows the determination of S-N type stress versus cycles or D-N type deflection versus cycles curves, as illustrated in AIR1418 as an alternate to flexure testing to a minimum endurance stress level.
Standard

Qualification of Hydraulic Tube Joints to Specified Flexure Fatigue Requirements

2013-01-02
CURRENT
ARP1258B
This SAE Aerospace Recommended Practice (ARP) establishes the method for qualification testing of tube joints and fitting attachments, using the flexure test method described in ARP1185. This qualification test method allows the determination of S-N type stress versus cycles or D-N type deflection versus cycles curves, as illustrated in ARP1418 as an alternate to flexture testing to a minimum endurance stress level.
Standard

Prestressing (Autofrettaging) of Hydraulic Tubing Lines

2013-01-02
HISTORICAL
AIR1379A
This AIR is intended to describe and document a process presently in use for proof testing, which at the same time improves the fatigue life of 304 1/8 hard CRES and 3Al-2.5V CWSR titanium hydraulic tubing lines.
Standard

PRESTRESSING (AUTOFRETTAGING) OF HYDRAULIC TUBING LINES

1977-07-01
HISTORICAL
AIR1379
This AIR is intended to describe and document a process presently in use for proof testing, which at the same time improves the fatigue life of 304 1/8 hard CRES and 3A1-2.5V CWSR titanium hydraulic tubing lines.
Standard

Method for Determining Relative Specific Gravity Polytetrafluoroethylene Tubing

2014-10-06
CURRENT
ARP1153A
This document describes a method for determining the specific gravity of tubing, fabricated from polytetrafluoroethylene, after a controlled heating and cooling cycle. The specific gravity obtained by this method is a measure of relative molecular weight of the resin. The measure, termed relative specific gravity (RSG), increases with decreasing molecular weight (see 2.3).
Standard

METHOD FOR DETERMINING RELATIVE SPECIFIC GRAVITY POLYTETRAFLUOROETHYLENE TUBING

1970-02-01
HISTORICAL
ARP1153
This specification describes a method for determining the specific gravity of tubing, fabricated from polytetrafluoroethylene, after a controlled heating and cooling cycle. The specific gravity obtained by this method is a measure of relative molecular weight of the resin. The measure, termed Relative Specific Gravity (RSG), increases with decreasing molecular weight (see 2.3).
Standard

Flexure Testing of Hydraulic Tubing Joints and Fittings by Planar Resonant Vibration (Free-Free Beam)

2013-01-02
HISTORICAL
AIR1529A
This Aerospace Information Report (AIR) establishes flexure test procedures to determine and classify the fatigue strengths of reconnectable or permanent hydraulic tube joints. The procedure is intended for conducting flexure tests of fittings and joints for hydraulic tubing materials such as AMS 5561 steel, AMS 4944 titanium and MIL-T-7081 aluminum alloy, mounted as free-free resonant beams. Of particular advantage are the inherent simplicity of test setup, minimum restraint from a test fixture, low power requirements, short test duration, and ease of varying stress level.
Standard

Fittings, Flanged to Beaded, Fluid Connection

2015-07-27
HISTORICAL
AS4875/2
This SAE Aerospace Standard (AS) establishes the requirements for fluid fittings that combine both flanged fitting ends and beaded hose connections for use in all types of fluid systems.
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