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heat damage

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Published: 01 November 2010
Fig. 15.14 Carbon fiber composite cross sections showing heat damage from lab-induced lightning strikes. (a) Section showing heat-affected fibers. Bright-field illumination, 10× objective. (b) Area under the strike zone showing matrix crazing due to the impact. Bright-field illumination, 10 More
Image
Published: 01 December 2015
Fig. 2 Carbon steel heat-transfer tube from a fluidized bed that was damaged by erosion and subsequent rusting More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030245
EISBN: 978-1-62708-349-2
... by lightning, with or without surface protection, there are usually areas that have heat damage. This damage is commonly found near the surface but can extend throughout the composite, depending on the constituents. As discussed previously, heat can degrade and vaporize both fibers and matrix. Figure 15.14...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870401
EISBN: 978-1-62708-314-0
... radiation, lightning strikes, thermal oxidation, and extreme temperatures. It also discusses the factors that influence flammability. environmental degradation flammability heat damage lightning strikes polymeric matrix composites thermo-oxidative stability ultraviolet radiation EXPOSURE...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130087
EISBN: 978-1-62708-284-6
...Abstract Abstract This chapter reviews various ways to classify failure categories and summarizes the basic types, causes, and mechanisms of damage, with particular consideration given to whether the likelihood of the types of damage can or cannot be influenced by the heat treating of steel...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270126
EISBN: 978-1-62708-301-0
... that it was made of chromium steel. The other atomizing parts found inside the nozzle had not suffered any damage due to heat. The Widmanstätten/basket weave microstructure seen near the flange and the stem is indicative of overheating above the transformation temperature (950 °C, or 1740 °F) followed...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870517
EISBN: 978-1-62708-314-0
... to be repaired is thoroughly dry, particularly if the repair area is going to be heated to above 200 °F (90 °C). Absorbed moisture in skins or liquid water in honeycomb can turn to steam and cause delaminations and blistering, and water in core can blow skins or cause additional core damage by blowing core cells...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230339
EISBN: 978-1-62708-298-3
.... Increasing the cutting speed with finer depth of cut may result in an unsafe practice due to the pyrophoric nature of heated beryllium chips. Increasing the feed rate leads to increasing the cutting forces and machining damage. It is necessary to consider certain precautions to successfully machine...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270191
EISBN: 978-1-62708-301-0
... tripped following the failure of the turbine rotor. The damage was maximum in the 18th/19th-stage seal land region of the compressor, with the 19th-stage blades sheared off. Metallurgical investigations were carried out on the roots and airfoil sections of the damaged blades. The blade roots had suffered...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430204
EISBN: 978-1-62708-253-2
... Schematic showing oxidation of T91 steel in steam environment. Source: Ref 6.10 The composition and thickness of the scale formed govern the heat transfer behavior across the tube wall and the possibilty of damage due to overheating. General Corrosion/Oxidation Damage Corrosion...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270095
EISBN: 978-1-62708-301-0
...Abstract Abstract A pair of bearings mounted side by side in an aircraft engine failed in service. Photographs show that the inner rings were either broken or deformed, the balls were worn and flattened, and the cages severely damaged. The bearing races were damaged as well, but only on one...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870085
EISBN: 978-1-62708-299-0
... ). Fig. 10 Typical fretting marks on a high-purity aluminum cylinder Fig. 11 Surface tears caused by fretting damage when aluminum cylinders in Fig. 10 were extruded Fretting corrosion has been observed on heat exchanger tubes at tube supports and at bolted or riveted joints...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780249
EISBN: 978-1-62708-281-5
... to damage accumulation within the active zone. The other part evolves as heat, Q . Thus: (Eq 13) D = W i − Q In highly dissipative materials, W i can be evaluated from load-displacement relationships. In principle, Q can also be measured, for example, by calorimetric...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.9781627082532
EISBN: 978-1-62708-253-2
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430351
EISBN: 978-1-62708-253-2
... of fusion at the weld interpass ( Fig. 6.166a to c ). The heat-affected zone (HAZ) microstructure had ferrite and fine pearlite in large amounts, indicating excessive heat input at the time of welding ( Fig. 6.166d ). Microstructure studies on the outer surface exhibited fairly aggressive corrosion damage...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270168
EISBN: 978-1-62708-301-0
... extinguished. On strip examination of the engine, several components of the turbine disc and fixtures had fractured or damaged. The following damaged components were received for investigation: disc spinning drive shaft with seal carrier and splined coupling (1 No.), dummy blade roots of LPT disc (72 Nos...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870307
EISBN: 978-1-62708-314-0
... chipping, and heat damage. It is therefore important to minimize forces and heat generation during machining. During metallic machining, the chips help to remove much of the heat generated during the cutting operation. Because of the much lower thermal conductivity of the fibers (especially glass...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490265
EISBN: 978-1-62708-340-9
... initiation damage assessment design considerations life assessment steam turbines The steam turbine is the device that converts the heat energy of the steam coming from the boiler into the mechanical energy of shaft rotation. It basically consists of a rotor from which project several rows...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030148
EISBN: 978-1-62708-282-2
... in specific hydrogen environments has revealed the susceptibility of aluminum to hydrogen damage. Hydrogen damage in aluminum alloys may take the form of intergranular or transgranular cracking or blistering. Blistering is most often associated with the melting or heat treatment of aluminum, where reaction...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2001
DOI: 10.31399/asm.tb.secwr.9781627083157
EISBN: 978-1-62708-315-7