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scarf repair

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Published: 01 January 2001
Fig. 13 Stepped-lap/scarf repair scheme More
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Published: 01 January 2001
Fig. 5 Illustrations of (a) conventional and (b) improved scarf repair techniques More
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Published: 01 January 2001
Fig. 6 Schematic of basic steps in the scarf repair to a sandwich composite with type A damage. (Adapted from Ref 15 ) More
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Published: 01 January 2001
Fig. 4 Illustrations of different types of scarf repairs for single-skin composites More
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003046
EISBN: 978-1-62708-200-6
... repair have been validated in this article through the required environmental and load condition tests. These include bonded-scarf joint flush repair, double-scarf joint flush repair, blind-side banded-scarf repair, blind-side sandwich repair, and bonded external patch repair. A brief note...
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Published: 01 November 1995
Fig. 5 Final single-scarf flush repair. RT, room temperature; RH, relative humidity. Bars denoted by RT fatigue represent specimens tested at room temperature after the fatigue history described in text. More
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Published: 01 November 1995
Fig. 6 Double-scarf flush repair More
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Published: 01 November 1995
Fig. 7 Blind-side single-scarf flush repair. C L , 2.49 mm (0.098 in.) diam Cleco hole More
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Published: 01 January 2001
Fig. 6 Scarf removal for flush (aerodynamic) repair More
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003454
EISBN: 978-1-62708-195-5
... coat repairs, patching, scarfing, and step repairs, have undergone extensive development and rigorous testing for use on composite ship structures. Resin infusion repair, which is a relatively new method for repairing marine composites, is also described. composite ship structures gel coat...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003458
EISBN: 978-1-62708-195-5
...(a) . Then the damage is removed and the surface is prepared for a scarf repair scheme; Fig. 1(b) shows the removed core plug and scarfed skin. The replacement core plug is installed ( Fig. 1c ) and the repair plies are cured in place ( Fig. 1d ). Fig. 1 Example of a repair to a sandwich structure. See text...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003459
EISBN: 978-1-62708-195-5
... and relatively quick and do not require the highly developed skills of the flush repairs described below. Flush (aerodynamic) patches, called “taper sanded” or “scarfedrepairs, are most commonly applied to thin solid laminates or sandwich structures. They require careful (smooth, flat) removal of material...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003455
EISBN: 978-1-62708-195-5
... the members it is joining; otherwise, it does not tolerate damage and could act as a weak link fuse. Another powerful reason for not using bonded repair of a small hole in thick laminates is the large amount of undamaged material that is removed for a scarf repair. For the majority of structural adhesives...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003451
EISBN: 978-1-62708-195-5
... required from the repair. Bonded repairs (hot or cold cured) may be made with overlap joints, stepped lap joints, or scarf joints. All of these must be made strictly to the OEM repair instructions using only the specified type. Bolted repairs to solid laminate structures can be used with either titanium...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003489
EISBN: 978-1-62708-195-5
... be much higher than those in shear loading and are far less forgiving. Also, these peaks are very sensitive to small eccentricities. These problems make tension and peel, at best, very questionable load paths. Figure 10(d) shows a scarf joint often used for damage repair. It is impressive...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005614
EISBN: 978-1-62708-174-0
... beam-welded joints is also included. The article concludes with discussions on EBW defects, the use of filler metal for weld repair, and the control plans, codes, and specifications of the EBW process. electron beam welding electron beam welding defects filler metal heat-affected zone...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003395
EISBN: 978-1-62708-195-5
... that are assembled with mechanical fasteners. Composite repair requires significant surface preparation. The damaged material is first removed, and the surrounding area is scarfed. A filler or a partially staged or cured bonded preform and a surface patch of several plies of fabric/resin prepreg is applied to return...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003384
EISBN: 978-1-62708-195-5
... locations in the structure or unplanned repairs that could be needed anywhere in the structure. Consequently, unless a specific application needs no provision for repairs or uses throw-away unrepairable components, the correct sequence for design is to first locate and size the joints, in fiber patterns...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001455
EISBN: 978-1-62708-173-3
... a long flow path for the filler metal should be designed for flow in one direction only, to prevent the entrapment of potentially corrosive flux. Scarf and butt joints usually are not as strong as the base metal, but they can be designed to give satisfactory performance. (It should be noted that scarf...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002492
EISBN: 978-1-62708-194-8
... there is a trade-off between fully integrated structures and structures that are assembled with mechanical fasteners. Composite repair requires significant surface preparation. The damaged material is first removed, and the surrounding good material is scarfed, chemically cleaned, and primed. A filler or partially...