design considerations for aluminum hull structures - Ship Structure ...

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-128-~gE1+0102030- .. ..—405060 —2 1TIII1-+———“.,—-.—6—.-. .—..——1——1—— —\—— . ..——,5.--— —— —..— ..-———\---—.. -iJL1 1TEMPERATURE(DEG~SFAHRENHEIT)- HUNDmOSFIG. C-1 Standard Time - TemperatureCurve for Fire Testsboard tests in 1936 (Reference (c2)). A stateroom was loaded with 5 poundsof combustibles per square foot of area. The resulting fire was found to beof a severity equal to that represented by the standard curve. All thelater tests conducted at this time were compared to the standard curve andthe comparative value of the exposure approximated. Thus, the comparativefire resistance of the various materials and constructionswere evaluated.5* ~ this method the U. S. Coast Guard, in conjunction with theNational Eureau of Standards have developed constructions utilizing approvedmaterials for steel ships based on a time-temperaturerating, Reference (C3).Some subsequent tests for aluminum have been conducted, again using thismethod of evaluation, (References (C4) and (CS)). This is also the basisof the tests being conducted under the auspices of the Society of NavalArchitects and Marine Engineers and the U. S. Coast Guard.
ulltil-ndd~lLLwSecurityClassificationDOCUMENT CONTROL DATA - R & D,S~.Cu~jlyClas.rfrration of tj[Ie, body of ab.?tracf and irjdcxjr,k~ annotation .?u,.1 be entered when !IIC .vdr~ll ~epor( is cla~sif; cd)ORIGINATING ACTIVITY (Corpora tew[hor) 2a. REP OR T5Ccu RlTY CLASSIFICATIONbb~ & c~~, Inc.!W York, New YorkIlnrla
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CONTENTSI.. II.III.Iv.v.VI ●VII.I
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LIST OF FIGURES(Cent’d)FIGURE NO.
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I. INTRODUCTIONThis report summariz
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art in fabricating and maintaining
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MONTEROSSO GRANA /17VALGRANA / CARA
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-8-Numerous references have been re
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.10.TABLE 2. Mechanical Properties
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TABLE 2 Mechanical Properties of Al
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TABLE 3 Mechanical Property Limits
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-16-l?igures5, 6, 7 ati 8 present f
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-18-ti-’”’-”-””””-L
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-20-60 .r---.— ..,.— -——,L-
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.22-each stress level, rate of load
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-24-!Z456-H321 = 0.485083-H321 = 0.
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-26-(c)Members with partial or cont
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-28-AllOyS 5083 and 54.56(~ content
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-30-The previous paragraphs have de
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-32-The problem of cargo hold abras
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-34-The question of residual stress
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.36-Each alloy was given a relative
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-38-GENERAL OBSERVATIONSFYior to a
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-40-The question of comparative imp
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-42-(d)(e)Poor quality welds due to
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-44-The ABS criteria noted above we
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-46-DNV would consider fatigue in e
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-48-is less, for the exposed side s
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Equation (2):-50-Hu1l SMa~um = Hull
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-52-Another aspect of vibrations wh
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-54-000000000Bottom Shell PlateSide
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-56-at the deck and keel. This stre
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-58-AT is the change inUT= Thermal
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-60-SUl@!ARYAll parties contacted f
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-62-(c)(d)(e)(f)T~e exterior side o
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TABLE 12 Aluminum Bulk Carrier - Su
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.66-INSUT.ATION AND SHEATHINGShell8
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-68-(b)(c)(d)(e)(f)(g)(h)(i)(j)At l
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-70-IIF.INSTALLATION OF SYSTEMS AND
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Rudder Assembly -carrier should be
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-74-(b)MechanicalTensile Strength 6
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-76-(e)The steel piping must be of
Page 88 and 89: -78-Other Piping Systems and Valves
Page 90 and 91: -80-struetion for the aluminum hull
Page 92 and 93: -82-Large heavy type machine~ must
Page 94 and 95: suffers attack in an alkaline envir
Page 96 and 97: -86-REPAIRSObtaining proper repairs
Page 98 and 99: -88-The design of the midship s~cti
Page 100 and 101: -90-assuming the increase is applic
Page 102 and 103: LIGHT SHIP WEIGHT ESTIMATE-92-In or
Page 104 and 105: -94-TABLE 20 Aluminum Bulk Carrier
Page 106 and 107: TABLE 22 Trim and StabilityFull Loa
Page 108 and 109: -98-TABLE 24 Price of Steel Bulk Ca
Page 110 and 111: GaseNumber. . . -.,- .TABLE 27 Comp
Page 112 and 113: -1o2-TABLE 28CarriersComparison of
Page 114 and 115: 12 ---n..T.[T7%l,=LEGS IU ORF=ErY
Page 116 and 117: -106-such as iron ore, on two of th
Page 118 and 119: -108-7)is,zg~ gg~5e mzz~E’4E!~K2j
Page 120 and 121: -11o-(a)(b)(c)(d)Inerting system fo
Page 122 and 123: -112-fatigue, particularly in the p
Page 124 and 125: -114-2k* Installation of Systems an
Page 126 and 127: -116-LIST OF REFERENCES(7)Fatigue P
Page 128 and 129: -11.8-LLST OF REFERENCES(Cent’d)(
Page 130 and 131: -120-ADDITIONAL SOURCES OF INFORMAT
Page 132 and 133: -122-redistribution of the still wa
Page 134 and 135: -124-APPENDIX BEXCERPTS FROMRULES A
Page 136 and 137: -126-92.07-10(d)(~) Interior stairs
Page 140 and 141: ectintyclassification4KEYWORDSROLEL
Page 142: SHIP STRUCTURE COMMITTEE PUBLICATIO
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