This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Permissible Defects in Hydraulic Tubing
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1973 by SAE International in United States
Annotation ability available
Test methods and data are summarized to assist in establishing limits for defects in aircraft hydraulic tubing. The defects evaluated are (1) cracks as detectable by ultrasonic inspection after tube fabrication, and (2) service damage such as chafing and denting observed on aircraft. Permissible defect limits are listed for 6061T6 aluminum return lines, 3000 psi hydraulic tubing of 21Cr-6Ni-9Mn as well as 304 1/8 hard CRES, and 3A1-2.5V cold worked titanium. The performance requirements are outlined to which the defect samples were tested.
Citationvan der Velden, H., "Permissible Defects in Hydraulic Tubing," SAE Technical Paper 730624, 1973, https://doi.org/10.4271/730624.
- Hydraulic Systems, Aircraft, Types I and II, Design, Installation and Data Requirements for
- Mutzke R. W. et al “Future Airplane Hydraulic Distribution System Design Developments and Testing Criteria” SAE paper 700789 October 1970
- Boeing Material Specification BMS7-191 “Sheet, Strip and Plate, 21Cr-6Ni-9Mn”
- Boeing Material Specification BMS7-185 “Hydraulic Tubing, Corrosion Resistant, 21Cr-6Ni-9Mn.”
- Harruff G. W. et al “Titanium 3A1-2.5V CW Hydraulic Tubing Development.” Report No. FAA-SS-72-60 SST Technology Follow-On Program-Phase I October 1972
- Boeing Material Specification BMS7-234 “Titanium 3A1-2.5V Seamless Tubing for Hydraulic Systems, Cold Worked and Stress Relieved.”
- Fittings, Flareless Tube, Fluid Connection
- Flexure Testing of Hydraulic Tubing Joints and Fittings