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Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610263
EISBN: 978-1-62708-303-4
... Abstract This chapter discusses the fatigue behavior of bolted, riveted, and welded joints. It describes the relative strength of machined and rolled threads and the effect of thread design, preload, and clamping force on the fatigue strength of bolts made from different steels. It explains...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230441
EISBN: 978-1-62708-298-3
... of different adhesives, and surface preparation requirements. It explains how adhesives are applied and cured and how curing times and temperatures affect bonding strength. It also discusses the use of bolts and rivets and the different types of joints that can be made with them. adhesive...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270070
EISBN: 978-1-62708-301-0
... Abstract Structural members in a radar antenna system are held together by cadmium-plated high-strength steel bolts, several of which had fractured along the fillet near the head. Investigators determined that the bolts did not seat properly, making contact only at the periphery, which...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270102
EISBN: 978-1-62708-301-0
... Abstract A design modification intended to reduce dowel bolt failures in an aircraft engine proved ineffective, prompting an investigation to determine what was causing the bolts to break. As the chapter explains, failure specimens were examined under various levels of magnification and...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270130
EISBN: 978-1-62708-301-0
... Abstract An aircraft crashed following the loss of yaw control in full airborne flight. The subsequent discovery of broken shutter bolts in the rear pitch reaction control valve led to an inspection campaign that found bolt failures of a similar nature in valves on several other aircraft. The...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270185
EISBN: 978-1-62708-301-0
... Abstract A pair of bolts on a connecting rod failed during a test run for a prototype engine. They were replaced by bolts made from a stronger material that also failed, one due to fatigue, the other by tensile overload. The fracture surfaces on all four bolts were examined using optical and...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270076
EISBN: 978-1-62708-301-0
... Abstract An adaptor and a bolt were overloaded during a flight causing them to fracture. This chapter recounts the circumstances that led to the failure and the investigation that followed. It includes images of the fracture surfaces which show that both components failed quickly due to...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270126
EISBN: 978-1-62708-301-0
... Abstract A test flight was cut short after a fire warning came on indicating a problem with one of the four engines on an aircraft. A visual examination following the precautionary landing revealed several burned hoses, a melted bolt, and fuel leaking from the base of the main burner. The fuel...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270063
EISBN: 978-1-62708-301-0
... presented include components and accessories of aircraft, helicopters, compressors, turbines, fuel pumps and other parts of aircraft engines, ground equipment, power plants, and chemical plants. The investigation of the failure of dowel bolts in an aircraft engine was carried out jointly with scientists...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270168
EISBN: 978-1-62708-301-0
... (23 Nos.), LPT blade locking plate (1 No.), T-headed bolts (43 Nos.), Bihexagonal nuts (38 Nos.), damaged fir tree portions (38 Nos.), and LP turbine disc (1 No.). All the parts were solvent cleaned and examined visually and under the microscope. The two broken studs were...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270025
EISBN: 978-1-62708-301-0
... that sectioning is a destructive operation and should be conducted only if necessary and after completing the microfractography described later in this chapter. In a turbogenerator, the turbine was coupled to the gear box by a set of bolts and nuts. In addition, the nuts were also welded to the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270162
EISBN: 978-1-62708-301-0
... near the tail boom yoke attachment and close to the weldments ( Fig. CH42.3 , CH42.4 ). The bolts were intact with the split pin locking. The portion of the gusset plate in the yoke on the left side was tightly held in the original position, whereas the portion of the gusset plate on the right side...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270084
EISBN: 978-1-62708-301-0
... fracture surface of the hub is shown in Fig. CH10.3 . Two of the three tie-rods can be seen with the nuts intact. The bolt hole closer to the air valve where the tie-rod is missing is elongated inward, toward the axle. This indicates that the rim had exerted a very heavy force on this tie-rod before the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270005
EISBN: 978-1-62708-301-0
... fatigue, the crack starting from a corner of the piston ring groove. A secondary crack had formed along the plane through two bolt holes located diametrically opposite. The continued pounding action of the piston had broken the rest of the piston beyond recognition. Fig. 2.17 Broken piston head...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270003
EISBN: 978-1-62708-301-0
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270019
EISBN: 978-1-62708-301-0
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270031
EISBN: 978-1-62708-301-0
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270045
EISBN: 978-1-62708-301-0
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270053
EISBN: 978-1-62708-301-0
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270059
EISBN: 978-1-62708-301-0