Hello,
I have been looking into the fatigue life and strength of bolts and have come across NAS6704, who's spec states that it is made of A286 UNS 66286 material. I've looked into finding cycles to failures using a developed S-N curve and also looked into the strain-life approach per guidance...
I am looking for Young's Modulus and coefficient of thermal expansion data for a number of fasteners, for example, MS24677/NAS1352. The spec sheets for these specify minimum tensile strength (psi) and also the specific strength of each bolt per size (lbs). However, under material it simply...
I am calculating the required installation torque/pre-load for a series of fasteners. I am using the basic formula of:
T=KFd
where K is the nut factor, F is the bolt preload, and d is the bolt nominal diameter.
Using the Machinery's Handbook 30th edition as a reference I calculate the preload...
I looking at bonding and grounding of aircraft components. This process includes surface cleaning to ensure good conductivity between contacting parts. My main sources are AC 21-99 and SAE ARP1870A. The two have directions on cleaning of aluminum surfaces and I am trying to reconcile them and...
Hello, the spec for this fastener lists "Minimum Breaking Strength" in pounds and has a note saying: "MINIMUM BREAKING STRENGTH VALUES ARE BASED ON 180 KSI HEAT TREATMENT. LINED THROUGH STRENGTH VALUES WERE BASED ON 170 KSI"
Perhaps I am not familiar with the term, but what does 'lined through...
