Results 61 to 70 of about 17,100 (191)

Enhancing bending strength in continuous drive friction welding of PEEK polymer cylinders through the innovative progressively increased welding area method

Journal of Advanced Joining Processes
The continuous drive friction welding (CDFW) stands out for its low energy consumption within the welding realm. Polyetheretherketone (PEEK) represents a high-performance engineering thermoplastic, falling under the polyaryletherketone family.
Chil-Chyuan Kuo, Hua-Xhin Liang, Song-Hua Huang, Armaan Farooqui, Shih-Feng Tseng   +4 more
doaj   +1 more source

Index to 1981 NASA Tech Briefs, volume 6, numbers 1-4 [PDF]

, 1986
Short announcements of new technology derived from the R&D activities of NASA are presented. These briefs emphasize information considered likely to be transferrable across industrial, regional, or disciplinary lines and are issued to encourage ...

core   +1 more source

Continuous drive friction welding of commercial pure aluminum to copper: Metallographic and mechanical characterization of various cross-sections

Journal of Advanced Joining Processes
An electrically and mechanically sound joint between aluminum and copper is essential in modern manufacturing, particularly in the field of e-mobility, where the demand for integrated, lightweight, and high-performance conductors continues to grow ...
Lucia Sauter, Martin Werz, Stefan Weihe
doaj   +1 more source

Space Construction Automated Fabrication Experiment Definition Study (SCAFEDS). Volume 1: Executive summary [PDF]

The techniques, processes, and equipment required for automatic fabrication and assembly of structural elements in space using the space shuttle as a launch vehicle and construction base were investigated.

core   +1 more source

Corrigendum to “Enhancing bending strength in continuous drive friction welding of PEEK polymer cylinders through the innovative progressively increased welding area method” [Journal of Advanced Joining Processes 10 (2024) 100255]

Journal of Advanced Joining Processes
The authors regret missing to add the contract number NSTC 113–2221-E-131-023 to the funding statement.
Chil-Chyuan Kuo, Hua-Xhin Liang, Song-Hua Huang, Armaan Farooqui, Shih-Feng Tseng   +4 more
doaj   +1 more source

Engineering analysis and test results of the pre-stage planetary gear trains for wrist rotation and pitch assembly and azimuth and elevation assembly of the extendable stiff arm manipulator kit assembly [PDF]

In order to improve the performance capability of the Extendable Stiff Arm Manipulator (ESAM) it was necessary to increase the overall gear ratio by a factor of approximately four.
Morris, R. N.
core   +1 more source

Orientation system for gamma ray astronomy experiments [PDF]

A new and rugged orientation system for use in gamma and X-ray astronomy has been built and test flown with favorable results.
Mammy, A. J.
core   +1 more source

Effect of friction time on the mechanical properties of AA 6061-T6 continuous drive friction welded joints

Journal of Welding Technology
Continuous drive friction welding (CDFW) is a solid-state method used to join solid cylindrical metals. This process involves several key parameters that influence the strength of the connection, including friction time, friction pressure, and machine speed.
Totok Suwanda, Eko Syaifudin, Aris Widyo Nugroho, Nur Ardiyansyah   +3 more
openaire   +1 more source

Ultra high vacuum adhesion testing of NERVA engine materials [PDF]

The primary objective of this research program was to determine the effects of surface cleaning and deliberate gaseous contamination on the adhesion behavior of selected candidate materials for use in the NERVA nuclear rocket engine program.

core   +1 more source

Friction pull plug welding: chamfered heat sink pull plug design [PDF]

, 2002
Friction Pull Plug Welding (FPPW) is a solid state repair process for defects up to one inch in length, only requiring single sided tooling (OSL) for usage on flight hardware.
Cantrell, Mark A., Coletta, Edmond R.
core   +1 more source