EKD 15831

Link to report  (33 Megs)

Initial pictures 

Overall view housing	Overall view stator	Closer view of fracture from ID	Note long axial score probably due to insertion and short, dark circumferential gouges due to relative motion of the housing and stator

Closer views of circumferential gouges/rubbing

Closer view  of circumferential gouges at ID	Closer view of circumferential gouges and rubbing at fracture

Rb Hardness trace

Examination of gouges/rub marks on ID

SEM of Fracture at ID	SEM  of Fracture at ID	SEM of circumferential  gouges at ID	SEM of circumferential gouge at ID	EDS of Debris in gouge= carbon	FTIR of Debris in gouge=phenolic?

Identification of Phenolic on ID landing

Brown stain on inside surface on landing	FTIR of Brown Stain = Phenolic Resin

Initial Bend Testing--results show good transverse ductility--specimen bent backwards and no tearing noted

4-Point Transverse Bend Test	After Testing	Before and after

Optical fractography--prior to cleaning

Optical fractography--after cleaning

SEM fractography

		All areas show dimpled rupture interrupted by intermetallics

Optical Microscopy

	Average field	Worst case 1	Worst case 2
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Engineering Materials

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