溫度效應及扭轉損傷對Gr/PEEK 積層板軸向靜態強度與疲勞壽命影響之研究

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໢ޘड़ᑕ̈́Ԯᖼຫ๋၆

Gr/PEEK ᎕ᆸڕ

คШᐖၗૻޘᄃি౻ု׻ᇆᜩ̝ࡁտ

ܘϖ̌

઼ϲလཌྷ̂ጯϠۏ፟࿪̍඀ጯր

ཧᅛߵ ӓރጳ

઼ϲ୻ර̂ጯજ˧፟ୠ̍඀ጯր

ၡ! ࢋ

дώࡁտ̚Ăֹϡ၁រ៍၅͞ё၆ሤ๬ّኑЪՄफ़(Gr/PEEK)צז໢ޘٕ

Ԯᖼຫ๋ޢĂ׎ᐖၗٛҩૻޘᄃি౻ု׻ٙצזᇆᜩซҖࡁտĄϤ၁រඕڍޝ

୻຾଀ۢĂ໢ޘड़ᑕ၆ٺᐖၗٛҩૻޘ֭՟ѣᇆᜩĂҭ၆ٺি౻ု׻ݒѣٙຫ चĄ҃Ԯᖼຫ๋૟ົࢫҲٛҩૻޘᄃি౻ု׻ĄТॡĂϤ၁រඕڍΞ൴னĂགྷ Ԯᖼຫ๋Гགྷ໢ޘᇆᜩٙౄј۞ຫ๋ົͧགྷ໢ޘᇆᜩޢГགྷԮᖼຫ๋ٙౄј

۞ຫ๋ᚑࢦĄΩ˘͞ࢬĂ၆̏צזຫ๋۞ྏͯд200^oC ซҖሤᑅ࣒ྃĂ֭ͷࡁ տ࣒ྃޢ۞ྏͯ׎ᐖၗٛҩૻޘᄃি౻ု׻Ąޝځព۞Ăሤᑅ࣒ྃޢ۞ྏͯ׎

௲ᆸࢬ᎕ົត͌ĄЯѩĂ၆ٺዎצԮᖼຫ๋ٕ۰གྷ໢ޘᇆᜩ۞ྏͯĂགྷ200^oC ሤᑅ࣒ྃޢি౻ု׻૟ົᆧΐĄ҃໢ޘᄃԮᖼ̝ม߉ΐдྏͯ˯۞ึԔĂ၆ٺ

࣒ྃޢ۞ྏͯдি౻ု׻˯۞ᇆᜩ̙̂Ą ᙯᔣෟĈᐖၗٛҩૻޘăি౻ု׻ăሤᑅ࣒ྃĄ

STUDY ON TEMPERATURE AND TORSION-DAMAGED EFFECTS ON STATIC STRENGTH AND FATIGUE LIFE OF THE GRAPHITE/PEEK

COMPOSITE LAMINATES

Yung-Chuan Chiou

Department of Biomechatronic Engineering National Chiayi University Chiayi, Taiwan 600, R.O.C.

Ming-Chuen Yip Wei-Hsien Wu

Department of Power Mechanical Engineering National Tsing- Hua University

Hsinchu, Taiwan, 300, R.O.C.

Key Words: ultimate strength, fatigue life, thermoforming repair.

ABSTRACT

By experimental observation, the effects of temperature and torsion-

damage on ultimate strength and fatigue life were investigated, respectively,

for the Graphite/PEEK laminate in this study. It is evident from the

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experimental results that there is no influence on residual strength after exposure to temperature changes. But temperature change effects are detrimental to the fatigue life. It can be found that the ultimate strength and fatigue are decreased life after torsion damage. Furthermore, by comparing the experimental results, it is found that the damage from temperature change effects after twisting is more serious than the damage from twisting after temperature changes. Meanwhile, the damaged specimens are repaired by thermoforming at a temperature of 200

^o

C. The corresponding static strength and fatigue life are also investigated in this study. Obviously, due to torsion-damage or temperature change effects, the area of delamination can be improved by thermoforming. Hence, the thermoforming method can increase the fatigue life of a specimen that has experienced temperature changes or twisting. It is noted that temperature and twist action has less influence on fatigue life for the repaired specimens.

˘ă݈ ֏

ܕѐֽ၆ٺ፟ୠ̮Іనࢍ˯۞ࢋՐߏ੼ૻޘ̈́ᅅณ

̼ĄЯѩ׍ѣ੼ּͧૻޘ̈́੼ݏޘඈᐹᕇ۞ញჯૻ̼੼̶

̄ኑЪՄफ़צז੼ޘڦϫĄϫ݈дਝ͉ຽăՠ֘ຽ̈́ྻજ ጡՄඈ࠹ᙯ̍ຽĂኑЪՄफ़̏̂ณפ΃ܛᛳՄफ़҃జᇃھ

ֹϡĄ੼ّਕኑЪՄफ़ॲፂૄՄ(matrix)۞̙ТĂΞ̶ᙷј ሤ๬ّᄃሤ׽ّኑЪՄफ़׌̂ᙷĄ҃ሤ๬ّૄՄͧሤ׽ّ

ૄՄдᄦ඀˯ॡมൺͷᄦౄјώྵҲĂТॡ׍ѣྵ੼۞৔

ᗼิّăྵ̂۞ຫ๋टԡޘ̈́ྵҲ۞໠ޘӛќதඈᐹᕇĄ

҃ሤ๬ّኑЪՄफ़ΞͽࢦາΐሤႦᏉГ׽̼ĂЯѩΞٽٺ

࣒ྃĂ֭ࣘ׍ΞаќГӀϡ۞ᒖܲໄهĂֹ଀ሤ๬ّኑЪ Մफ़д̍ຽ˯ు႙צזࢦෛĄ

ϤኑЪՄफ़ٙ௡ј۞ၹІдວྻ̈́௡྅࿅඀̈́၁ᅫ

ٚצি౻࢑ྶ̚ĂΞਕצז઎ШԮ١۞үϡ҃ౄјຫ๋Ą Ϥ͛ᚥ[1-3]̚ΞۢĂኑЪՄफ़ዎצԮ١࿅඀̚Ă௲ᆸன෪ ҋྏͯ۞׌ᙝ΍ன֭ͷഈྏ̰ͯొјܜĂТॡĂᐌ඾Ԯᖼ

׹Ѩ۞ᆧΐ׎௲ᆸ඀ޘົ෸ᚑࢦĄኑЪՄफ़Чᆸ̝มЯࠎ ፘ⟯ăញჯ̈́ញჯଵЕ͞Ш̙ТĂౄјᆸᄃᆸ̝มЯγࠧ

໢ޘ˯̿ॡĂ̙Т۞ሤᎶኮณ҃ጱ࡭ሤᑕ˧யϠĂֹ଀ૄ

ՄயϠ຋ෘᓀԛјຫ๋Ą૱֍тਝ۩ጡд੓ར׶ࢳҖ̝

มĂٙ఍۞ᒖဩ໢ޘត̼ࠤ̂Ăԛј˘ሤೈᒖĂౄјૄՄ யϠ຋ෘᓀඈຫ๋ĄЯѩֹϡኑЪՄफ़ٙ௡ј۞ၹІĂื

҂ᇋזᒖဩ໢ޘ۞ត̼၆ၹІౄј۞ຫ๋̈́׎ု׻۞ᇆ ᜩĄ҃ᒖဩ໢ޘត̼၆ኑЪՄफ़۞ݏޘ̈́ি౻ု׻۞ᇆᜩ ᄃෘᓀ۞Ϡјඈ࠹ᙯ۞ࡁտт͛ᚥ[4-9]ٙ̚ϯĄ

Ϥͽ˯͛ᚥΞۢຫ๋ߏౄјኑЪՄफ़ݏޘ̈́ি౻ု

׻ഴ͌۞͹ЯĄ҃ኑЪՄफ़ၹІдֹϡ࿅඀̚ĂυؠົЯ γࠧ࢑ྶăᒖဩֹ̈́ϡ̙༊ඈኜкЯ৵҃ౄјຫ๋Ą˘ό Մफ़ѣٙຫ๋ĂтڍਕдϏԆБ৔ᗼ݈ซҖዋ༊࣒ྃĂޭ

ೇՄफ़۞࢑ྶٚצਕ˧Ă݋ΞͽؼܜֹϡѐࢨĂࢫҲјώĄ

ૄٺ҂ᇋזၹІჯ࣒۞ܮӀّ̈́щБّĂሤ๬ّኑЪՄफ़

ٙ׍ѣ۞࣒ྃপّՀצזࢦෛĄҌٺሤ๬ّኑЪՄफ़࣒ྃ

ԫఙ͞ࢬĂགྷ૱జֹϡ۞࣒ྃ͞ڱࠎሤᑅ࣒ྃĄϤ͛ᚥ̚

[10-13] ពϯĂ̙Т۞ሤᑅ࣒ྃ୧І૟ົᇆᜩՄफ़࣒ྃޢ۞

ᐖၗૻޘᄃি౻ૻޘਕ˧Ą

ώ͛ϫ۞д៍၅໢ޘड़ᑕ(60ƨ72 ̈ॡ)̈́Ԯᖼຫ๋

(4°Ҍ 40°ć900 ׹Ѩ)၆჆ញჯૻ̼ჸゝゝ⟮(Gr/PEEK)ሤ๬

ّኑЪՄफ़ૄᆸڕдᐖၗૻޘ̈́คШি౻ု׻۞ᇆᜩĂ֭

੅ኢགྷ࿅໢ޘड़ᑕ̈́Ԯᖼຫ๋АޢึԔ̙Тଐڶ˭Ăྏͯ

ᐖၗૻޘᄃি౻ု׻۞ត̼ĄТॡ၆̏צזຫ๋ྏͯซҖ ሤᑅ࣒ྃĂଣ੅གྷሤᑅ࣒ྃޢᐖၗૻޘᄃি౻ု׻۞ត̼

࣒̈́ྃड़தĂԓ୕ᖣѩ၁រᇴፂޙ˘ྤफ़ऱĂүࠎ͟ޢ࣒

ྃ̍ү˯̝ણ҂Ą

˟ă၁រ̰ट

ώ ࡁ տ ૟ ၆ ሤ ๬ ّ ኑ Ъ Մ फ़ ů ჸ ゝゝ ⟮ ([0/45/90/-45]2s Gr/PEEK)᎕ᆸڕ۞ᐖၗໂࢨૻޘ(ultimate strength)̈́ি౻ૻޘ(fatigue strength)ซҖ၁រ̶ژĄ֭ͷ

̶ژѩ˘ኑЪՄफ़᎕ᆸڕдצז໢ޘड़ᑕٕ۰Ԯᖼຫ๋

۞ଐڶ˭၆׎ᐖၗૻޘ̈́ি౻ု׻۞ᇆᜩĄТॡĂ៍၅

఺׌჌ᒖဩЯ৵߉ΐึԔ̙Тଐԛ˭ĂՄफ़۞ᐖၗണዶ

ૻޘ̈́ি౻ု׻۞ត̼Ąซ˘Վଣ੅Ăሤᑅ࣒ྃ၆צז ᒖဩЯ৵ᇆᜩ˭Ă᎕ᆸڕՄफ़۞፟ୠّኳ˯ߏӎѣԼ චĄຫ๋ྏͯᄦౄᄃ࠹ᙯ۞၁រણᇴనؠͽ̈́၁រ߹඀

ᄃ̰टĂ̶ࢗт˭Ĉ 1. ྏͯᄦү

ֶፂ ASTMD3039-76 ۞ఢቑ૟᎕ᆸڕ̷౷ј࠹ᙯ۞

͎̇Ă൒ޢГϡCN ቱ૟ӵ޺ڕ(end tab)ቱЪٺ᎕ᆸڕ˯Ă ͽԆј၁រྏͯĄٙԆј۞၁រྏͯγݭᄃྏ͎ͯ̇Ăт ဦ 1 ٙϯĄ၆ٙᄦј۞ྏͯĂд၁រ݈࠰ֹϡ෹ࢰگ C-Scan ซҖᑭീĂྏͯବೡඕڍтဦ 2 ٙϯĄ෹ࢰگବೡ Ξ౅࿅̙ТᗞҒӔன΍̙Т۞ྏͯࡍ౅தĂТॡᑭീବೡ ඕڍΞۡତϤОܑ፟ᑕЕО΍ֽĄЯѩĂΞۡତ៍၅΍ྏ

ͯ̚৿ౝ۞ٙд̈́৿ౝ۞̂̈Ąдѩࡁտ̚ĂЯֹϡ۞ྏ

ͯ࠰ࠎπڕېĂ߇ଳϡ෹ࢰگࡍ౅͞ё၆ྏͯซҖᑭീĂ

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ܑ˘ ᐖၗٛҩૻޘ၁រඕڍ(Original ultimate strength;σo, residual strength;σ) Mean value σ/σ_o Mean value σ/σ_o

a 類試片 736.26 (MPa) e 類試片 703.90 (MPa) 95.60 (%) b 類試片 744.63 (MPa) 101.14 (%) f 類試片 700.27 (MPa) 95.11 (%) c 類試片 684.50 (MPa) 92.97 (%) g 類試片 666.23 (MPa) 90.49 (%) d 類試片 688.23 (MPa) 93.48 (%) h 類試片 660.73 (MPa) 89.74 (%)

127 (Gage length) 19.14

ဦ1 ྏ͎ͯ̇ဦ(unit: mm)

ဦ2 ࣧՄྏ̝ͯ෹ࢰگ C-Scan ဦ

ဦ3 གྷԮᖼ 900 ׹Ѩޢ̝෹ࢰگ C-Scan ဦ

ဦ4 གྷ 60ƨ72 ̈ॡ໢ޘᇆᜩޢ̝෹ࢰگ C-Scan ဦ

ֹϡ۞෹ࢰگC-Scan ᑭീր௚ࠎ AIT-5112 ݭĄϤᑭീඕ ڍΞ൴னώࡁտֹ̚ϡ۞ྏͯ׎Ԇፋّ̂࡭։рĄࠎܮӀ ᄲځͽ̈́ͧྵ࠹ᙯ۞၁រன෪Ăώ͛၆ٺ̏జᄦј᎕ᆸڕ

ྏͯჍࠎa ᙷྏͯĄ

(˘) Ԯᖼຫ๋ᄃ໢ޘड़ᑕనؠ

၆ٺԮᖼຫ๋నؠĂдώࡁտֹ̚ϡInstron-1322 ݭ ᗕคШি౻၁រ፟၆̏జᄦј᎕ᆸڕྏͯ߉ΐ900 ׹Ѩ̝

Ԯᖼ࢑ྶĂ၆ྏͯ߉ΐ۞౵̂Ԯᖼ֎ࠎ 40°Ăͷ౵̂Ԯᖼ

֎ᄃ౵̈Ԯᖼ֎̝ͧଠטࠎ0.1Ăᐛதࠎ 0.5HzĄ၆ٺ̏జ ߉ΐ׹ѨԮᖼ࢑ྶ۞ྏͯซҖ෹ࢰگC-Scan ᑭീĂΞ൴ன

ྏͯ׌ბ̈́ᙝቡ΍னځព۞௲ᆸĂТॡྏͯ̚มϺѣ௲ᆸ

۞ϠјĄ߇дѩԮᖼણᇴనؠ˭Ăྏͯѣ௲ᆸ۞৔ᗼயϠĂ ᖣѩ˞ྋѩ˘Ԯᖼຫ๋၆Մफ़۞ᐖၗૻޘ̈́ি౻ု׻۞ᇆ ᜩĄѩ˘׍ѣԮᖼຫ๋۞ྏͯдώ͛̚૟జჍࠎ c ᙷྏ

ͯĄдώࡁտ̚၆ٺଣ੅໢ޘड़ᑕ၆ Gr/PEEK ኑЪՄफ़

᎕ᆸڕ۞ᇆᜩĂ׎ྏͯᄦౄ߹඀ߏ૟a ᙷྏͯཉٺॸ˯ݭ

ޮ໢ޮᒅ၁រ፟̚Ă໢ޘనؠд60ƨĂᒅޘࠎ༊ॡވ໢˭

۞ᒅޘĂཉٸॡมనࠎ72 ̈ॡĄ၆ٺ̏צז໢ޘᇆᜩ˭۞

ྏͯซҖ෹ࢰگ C-Scan ᑭീĂϤဦ 3 Ξ࠻΍ྏ֭ͯ՟ѣ ຫ๋ĂЯѩ 60ƨ72 ̈ॡ۞໢ޘड़ᑕ̙֭ົ၆ྏͯயϠ௲ ᆸĄ၆ٺצז໢ޘᇆᜩ˭۞ྏͯజჍࠎb ᙷྏͯĄώࡁտ

̚૟၆Ԯᖼຫ๋׶໢ޘड़ᑕ׌჌ᒖဩЯ৵ĂЯ߉ΐึԔ̙

Тଐԛ˭၆Մफ़۞ᇆᜩซҖ̶ژᄃ៍၅ĄЯѩ၆ٺА໢ޘ ड़ᑕГགྷԮᖼຫ๋۞ྏͯჍࠎe ᙷྏͯĂАԮᖼຫ๋Гགྷ

໢ޘड़ᑕ۞ྏͯჍࠎg ᙷྏͯĄ (˟) ᑅ࣒ྃڱ

ሤᑅ࣒ྃ၆ٺ Gr/PEEK ኑЪՄफ़д࣒ྃ˯׍ѣᐹ ๕ĄЯࠎሤ๬ّૄՄд੼໢ॡ׍ѣࢦ๬ّĂЯѩΞజࢦኑ

ֹϡĄҭሤᑅ࣒ྃ۞͞ё໢ޘ̙Ξ͉੼Ăࡶ໢ޘ෹࿅ૄՄ

۞Ⴆᕇ(343ƨ)ĂऻѣౄјႦᏉېૄՄ߹εཱ̝Ă૟ጱ࡭Մ फ़ّኳК̼ĄЯѩ࣒ྃ໢ޘ૱ᏴؠдૄՄ̝ࠟሬᖼೱ໢ޘ

׶Ⴆᕇ̝มĄώ͛ࠎ˞ྋሤᑅ࣒ྃ၆ٺצזԮᖼຫ๋ᄃ໢

ޘड़ᑕᇆᜩ˭۞࣒ྃड़ਕĂЯѩ၆c ᙷĂe ᙷᄃ g ᙷྏͯ

ཉٺሤᑅ፟̚ซҖ࣒ྃĄሤᑅ࣒ྃ୧Іߏֶፂ͛ᚥ[3]૟࣒

ྃ໢ޘؠࠎ 200ƨĂሤᑅᑅ˧ࠎ 6.89 MPa (1000 psi)Ăሤᑅ ॡมࠎ̶̣ᛗĂ൒ޢГٸˢ18ƨ̈́ 6.89 Mpa ۞ҽݒ፟̚

ާిҽݒ5 ̶ᛗĄ၆ٺ c ᙷĂe ᙷᄃ g ᙷ఺ˬ჌ᙷݭ۞ྏ

ͯдགྷ࣒ྃޢ̶ҾజჍࠎ d ᙷ f ᙷᄃ h ᙷݭྏͯĄ 2. ၁រણᇴనؠ

(˘) ᐖၗૻޘ၁រ

ώࡁտॲፂASTM D3039-76 ̝ᐖၗٛҩ၁រఢॾ၆ a ᙷĂb ᙷĂc ᙷĂd ᙷĂe ᙷĂf ᙷĂg ᙷᄃ h ᙷ۞ྏ̶ͯҾ ซҖᐖၗٛҩ၁រĄֹٙϡ۞၁រ፟ݭࠎ Instron-1322 ݭ ᗕคШি౻၁រ፟ĄଠטሀёࠎҖ඀ଠטĂӵᐝٛҩిத నؠࠎ0.01mm/sĂͽ႕֖၁រࠎ໤ᐖၗ۞઄నĄགྷѩ၁រ Ξפ଀Մफ़۞ໂࢨૻޘ(σ_o)̈́ണዶૻޘ(σ )ĄՏ჌ᙷݭྏ

ͯണዶૻޘ۞πӮࣃ̂̈тܑ˘ٙϯĂͷπӮࣃ̂̈૟ઇ ࠎЧᙷݭྏͯซҖคШি౻၁រ̚׎ᑕ˧ॎ಼۞ણ҂Ą (˟) ি౻၁រ

ώࡁտ࠰ֹϡ Instron-1322 ݭᗕคШি౻၁រ፟၆ٙ

ѣᙷݭྏͯซҖคШি౻၁រĄଠטሀёࠎ࢑ఈଠטĂᐛ தనؠࠎ3HzĂീྏگԛࠎϒؽگĄ၆ٺՏ˘ᙷݭ۞ྏͯ

࠰̶Ҿдα჌ᑕ˧ॎ಼˭ซҖি౻၁រĂ੃ᐂ׎ি౻ု׻

(N )Ăͽޙϲᑕ˧ॎ಼׶ি౻ု׻̝ม۞ᙯాّĄ҃၁រ_f

̚۞ᑕ˧ॎ಼౵̂ࣃ࠰פҋٺໂࢨૻޘ(σ_o)ٕണዶૻޘ (σ)۞ 85%ă80%ă75%ă70%ă67%ĂТॡᑕ˧ͧ࠰ؠࠎ 0.1ĄՏ˘ᙷݭྏͯ۞ি౻၁រඕڍтܑ˟ٙЕĄ

(4)

ܑ˟ ٛҩি౻၁រඕڍ(ᑕ˧ͧࠎ 0.1)

a ᙷྏͯ b ᙷྏͯ c ᙷྏͯ d ᙷྏͯ

σa

(Mpa) Cycles

σa

(Mpa) Cycles

σa

(Mpa) Cycles

σa

(Mpa) Cycles

281.62 1883 268.07 3469 246.42 4455 247.76 3324 281.62 243 268.07 956 246.42 2660 247.76 2099 281.62 2191 268.07 1003 246.42 1466 247.76 4615 265.05 5974 251.31 45724 231.02 22922 232.28 14260 265.05 12646 251.31 12726 231.02 2721 232.28 18412 265.05 3072 251.31 5776 231.02 25249 232.28 34107 248.49 24235 234.56 51392 215.62 65031 216.79 39182 248.49 19826 234.56 63564 215.62 61517 216.79 84581 248.49 31300 234.56 39139 215.62 40995 216.79 67507 231.92 106872 224.51 82669 206.38 125544 207.50 97332 231.92 154046 224.51 120200 206.38 66400 207.50 218000 221.98 300000 224.51 199730 206.38 253433 207.50 129606

221.98 300000

e ᙷྏͯ f ᙷྏͯ g ᙷྏͯ h ᙷྏͯ

σa

(Mpa) Cycles

σa

(Mpa) Cycles

σa

(Mpa) Cycles

σa

(Mpa) Cycles

253.40 4309 252.10 13718 239.84 1471 237.87 7889 253.40 2447 252.10 7068 239.84 1806 237.87 17529 253.40 1113 252.10 1248 239.84 1974 237.87 1990 237.57 15874 236.34 45065 224.85 10747 223.00 20647 237.57 11872 236.34 49278 224.85 6931 223.00 62513 237.57 4812 236.34 28153 224.85 30569 223.00 21237 221.73 48391 220.59 89622 209.86 119120 208.13 168083 221.73 161817 220.59 63073 209.86 43788 208.13 106886 221.73 53065 220.59 113251 209.86 81399 208.13 75631 212.23 77744 211.13 79080 200.87 101148 199.21 300000 212.23 218200 211.13 300000 200.87 223813 199.21 214600 212.23 224986 211.13 300000 200.87 76681 199.21 111409

ˬăണዶૻޘ̶ژ

ॲፂASTM D3039-76 ̝ᐖၗٛҩ၁រఢቑĂ၆ώࡁ տٙᄦј۞ᇴ჌ᙷݭྏͯซҖᐖၗٛҩ၁រĂณീ׎ണዶ

ૻޘĂͽଣ੅໢ޘड़ᑕᄃԮᖼຫ๋үϡޢണዶૻޘ۞ត

̼ĄТॡͽࣧՄྏͯ۞πӮᐖၗٛҩૻޘࠎૄᖂ˭Ă૟ώ

͛ٙనؠ۞໢ޘड़ᑕᄃԮᖼຫ๋̈́ሤᑅ࣒ྃ͞ڱ၆ണዶૻ

ޘᇆᜩĂ̶ҾซҖଣ੅т˭Ĉ

1. Ԯᖼຫ๋ᄃགྷ໢ޘड़ᑕᇆᜩ˭ണዶૻޘ̶ژ ဦ5 ពன΍̏གྷԆј໢ޘड़ᑕ၁រᄃԮᖼຫ๋̈́ሤᑅ

࣒ྃޢ۞̙ТᙷݭྏͯĂ׎ണዶૻޘπӮࣃ۞̂̈ត̼ᄃ ണዶૻޘπӮࣃ၆ࣧՄᐖၗٛҩૻޘπӮࣃ̝ม۞ͧࣃĄ

఺ֱ၁រᇴፂ૟үࠎ̙ТᙷݭྏͯซҖٛҩ-ٛҩېၗ˭

ি౻၁រᑕ˧ॎ಼ֶ̝̂̈ፂĄϤဦ5 Ξ࠻΍གྷ໢ޘड़ᑕ ޢ̝ണዶૻޘ(case (b))ᄃࣧՄྏͯ۞ᐖၗٛҩૻޘ̝ม۞

ͧࣃ̂ٺ 1Ăពϯགྷ໢ޘड़ᑕޢ၆ྏͯᐖၗૻޘ̙ົౄј К̼үϡĄТॡϤဦ4 Ξ࠻΍གྷ໢ޘड़ᑕޢ۞ྏ֭ͯ՟ѣ

௲ᆸຫ๋ĂЯѩ໢ޘड़ᑕ̙ົ၆ྏͯౄјᐖၗૻޘ̝ഴ ҲĄϤԮᖼຫ๋ޢണዶૻޘ(case (c))ᄃࣧՄྏͯ۞ᐖၗٛ

ҩૻޘ̝ม۞ͧࣃĂΞ୻຾࠻΍གྷԮᖼຫ๋ޢ૟ົጱ࡭ྏ

ͯૻޘ˭ࢫĄϤဦ3 ̚ពϯགྷԮᖼຫ๋ޢĂྏͯ׌ბ̈́ᙝ ቡځពѣ௲ᆸயϠĂͷдྏͯ̚ม˵ѣ௲ᆸ۞ϠјĂ఺ܑ

ϯྏͯдԮᖼޢົౄј˘ؠ඀ޘ۞ຫ๋࡭ֹૻޘࢫҲĄ၆ ٺАགྷ໢ޘड़ᑕޢГགྷԮᖼຫ๋(case (e))׎ണዶૻޘᄃࣧ

Մྏͯ۞ᐖၗٛҩૻޘ̝ม۞ͧࣃࠎ 0.956Ăពன΍໢ޘ ड़ᑕᄃԮᖼຫ๋ౄјྏͯѣ௲ᆸன෪۞΍னĂ҃ጱ࡭ᐖၗ

ٛҩૻޘࢫҲĄ࡭ٺАགྷԮᖼຫ๋ޢГགྷ໢ޘड़ᑕ(case (g))

۞ྏͯĂϤဦ 5 ̚Ξពன΍ྏͯ۞ᐖၗٛҩૻޘࡗ˭ࢫ 10%νΠĄૻޘ˭ࢫ۞͹ЯߏֽҋٺԮᖼ࢑ྶ၆ྏͯԛј

௲ᆸĂֹ଀ᐖၗૻޘࢫҲĄͧྵcase (b)ᙷݭྏͯᄃ case (e) ᙷݭྏͯ۞ᐖၗٛҩૻޘĂΞ࠻΍՟ѣயϠ໢ޘड़ᑕᄃԮ

(5)

500 550 600 650 700 750 800

Mean ultimatetension strength: σ0 = 736.26 (Mpa)

Mean residual s rength, σ, (Mpa)

Residual Strength σ/σ0

80 90 100 110 120

σ/σ0 (%)

Case (b) Case (c)Case (d) Case (e) Case (f) Case (g) Case (h)

ဦ5 ׍̙Тᒖဩຫ๋̈́׎ሤᑅ࣒ྃޢ̝πӮണዶૻޘ

̶Ҷͧྵ

10² 10³ 10⁴ 10⁵ 10⁶

210 220 230 240 250 260 270 280 290 300

Stress amplitude σa, (MPa)

: σ^a = 347.51-22.377log(Nf)

σ^{min /}σ^max = 0.1 Original

Cycles to failure (Nf)

ဦ6 ࣧՄᇾ໤ྏ̝ͯি౻ု׻ѡቢ

ᖼ࢑ྶΐј۞К̼ड़ڍĂ߇Ԯᖼٙౄј۞௲ᆸ၆ٛҩૻޘ ѣۡତᇆᜩĄϤͧྵcase (c)ᙷݭྏͯᄃ case (g)ᙷݭྏͯ

۞ᐖၗٛҩૻޘĂΞ൴ᛇޢ۰ૻޘ࠹၆ٺ݈۰ࠎ̈ĂЯѩ

໢ޘड़ᑕ၆ֽҋٺԮᖼٙౄј۞௲ᆸ׍ѣᆧ̂ᆧк۞ड़ ᑕĂТॡ၆case (e)ᙷݭྏͯᄃ case (g)ᙷݭྏͯ۞ᐖၗٛ

ҩૻޘซҖͧྵĂϺΞ࠻΍Ԯᖼ࢑ྶГགྷ໢ޘड़ᑕүϡ˭

யϠΐј۞К̼ड़ڍᚑࢦٺགྷ໢ޘड़ᑕޢГགྷԮᖼ࢑ྶү ϡౄј۞К̼ड़ڍĄ

2. ሤᑅ࣒ྃ၆ᐖၗૻޘ̶࣒ྃژ

Ϥဦ5 ̚Ξͽ࠻΍ࣧՄؕྏͯགྷԮᖼ࢑ྶٕԮᖼ࢑ྶ

ລ੨໢ޘड़ᑕүϡ˭Ăྏͯѣ௲ᆸ۞யϠĂពன΍Ԯᖼ࢑

ྶ၆ྏͯౄј˘ؠ඀ޘ۞ຫ๋Ą҃ሤᑅ࣒ྃ၆௲ᆸຫ๋׍

ѣ࣒ྃΑਕĂ၆Մफ़۞፟ୠّኳቁ၁ѣ೩̿۞ड़ڍĂЯѩ ώ͛၆Ԯᖼຫ๋ᄃགྷ໢ޘड़ᑕᇆᜩ˭۞ྏͯซҖ࣒ྃĂซ

҃ଣ੅ሤᑅ࣒ྃ၆ຫ๋ྏͯണዶૻޘ۞࣒ྃड़ᑕĄϤ၁រ

̚Ξ࠻΍Ԯᖼ࢑ྶޢГགྷ࣒ྃ۞ྏͯ(case (d))Ă׎ᐖၗπ Ӯٛҩૻޘ֭՟ѣځព۞೩̿ĄЯࠎሤᑅ࣒ྃΪߏ૟ొЊ

௲ᆸ̈́ෘᓀᕆЪĂ௲ᆸ̈́ຫ๋֭൑ڱԆБொੵĂЯѩдૻ

ޘ˯ѣֱధ۞೩̿ҭૻޘ൑ڱԆБޭೇߏΞͽ࿰ഇ۞Ą၆

(a)

(b) 3000

(c) 6000

(d) 9000

(e) 106872 (failure

ဦ7 ᑕ˧ॎ಼ࠎ 231.92Mpa үϡ˭ࣧՄྏͯд̙Т׹

Ѩ̝෹ࢰگC-scan ବೡဦ

ٺ࣒ྃགྷ໢ޘड़ᑕޢГགྷԮᖼ࢑ྶ۞ྏͯ(case (f))Ă൴ன གྷሤᑅ࣒ྃޢ۞ૻޘ՟ѣ೩̿Ă҃ͅѣൾ຋˭ࢫ۞ᔌ๕Ă ТॡགྷԮᖼি ౻ޢГགྷ໢ޘ ड़ᑕ۞ྏͯд ࣒ྃޢ(case (g))Ă׎ૻޘ˵ѣൾ຋˭ࢫ۞ᔌ๕ĄϤѩពன΍ሤᑅ࣒ྃ၆

໢ޘड़ᑕᄃԮᖼ࢑ྶౄј۞К̼ΐјड़ڍĂ၆ᐖၗૻޘ̙

׍ѣ࣒ྃΑਕĄ

αăি౻ု׻̶ژ

၁រඕڍពனĂࣧՄྏͯགྷ߉ΐԮᖼ֎ॎ಼ቑಛд4°

Ҍ40°Ăүϡ 900 ׹ѨޢĂྏͯ̚யϠ௲ᆸຫ๋ĄЯѩ૟

ଣ੅ĂѩԮᖼ௲ᆸຫ๋၆ٛҩি౻ု׻۞ᇆᜩĂ֭၆60ƨ 72 ̈ॡ۞໢ޘड़ᑕтңᇆᜩি౻ု׻ซҖ̶ژĄТॡଣ੅

໢ޘड़ᑕລ੨Ԯᖼຫ๋ٙౄј۞ΐјК̼үϡ၆Մफ़ٛҩ

ি౻ု׻۞ᇆᜩĂ֭ซ˘Վϡ 200ƨ၆̏צຫ๋ྏͯซҖ ሤᑅ࣒ྃĂͽ៍၅ሤᑅ࣒ྃޢ፟ୠّኳаೇّĄ၁រඕڍ ᄃ̶ژт˭Ĉ

1. ࣧՄٛҩি౻ု׻۞ଣ੅̶ژ

дѩࡁտ̚ĂВפ̣࣎ᑕ˧ॎ̶಼Ҿ၆ࣧՄྏͯซҖ

ি౻၁រĄᑕ˧ॎ಼ᄃি౻ု׻̝ม۞ᙯాّтဦ 6 ٙ ϯĄဦ̚ពϯՄफ़ٚצᑕ˧ॎ಼෸੼ĂՄफ़۞ি౻ု׻ົ

෸ҲĄဦ7 ߏдᑕ˧ॎ಼ࠎ 231.92 Mpa үϡଐڶ˭ĂࣧՄ

ྏͯՏགྷ30000 ׹ѨĂซҖ෹ࢰگ C-scan ବೡ۞ϯຍဦĂ ဦ̚ពϯ௲ᆸࢬ᎕ੵ׹Ѩᇴᆧΐ҃ᕖ̂ͷ௲ᆸϤᙝࠧฟؕ

யϠ֭ͷШྏͯ̚มјܜĄГଂဦ7(d)ᄃဦ 7(e)۞ͧྵ̚Ă

(6)

300 290 280 270 260 250 240 230 220 210 200 190

10² 10³ 10⁴ 10⁵ 10⁶

Cycles to failure (Nf) Stress amplitude, σa, (MPa)

σmin/σmax= 0.1

Original σa = 347.51-22.377log (N_f) Temperature σa = 3332.15-20.42log (Nf)

ဦ8 ࣧՄᄃགྷ໢ޘड़ᑕᇆᜩޢ۞ি౻ု׻ѡቢ̝ͧྵ

300 290 280 270 260 250 240 230 220 210 200 190

10² 10³ 10⁴ 10⁵ 10⁶

Original σa

= 347.51-22.377log (N_f) Torque σa

= 311.14-19.921log (N_f)

ဦ9 ࣧՄᄃ̏׍Ԯᖼຫ๋۞ি౻ု׻ѡቢ̝ͧྵ

Ξͽ൴னд౵ޢ۞ု׻׹Ѩ̚Ăྏͯ̚۞௲ᆸົԣి۞ؼ ҩ̈́ᆧΐĂጱ࡭౵ޢౄјྏͯ۞৔ᗼĄ

2. Ԯᖼຫ๋ᄃགྷ໢ޘड़ᑕᇆᜩ˭̝ি౻ု׻̶ژ

૟གྷ 60ƨ72 ̈ॡ໢ޘड़ᑕޢ۞ྏͯĂ̶ҾซҖα࣎

ᑕ˧ඈ৺۞ٛҩি౻၁រĂٙ଀זඕڍтဦ8 ٙϯĄϤဦ 8 ̚ពன΍Ăצ໢ޘड़ᑕޢ۞ྏͯ׎ি౻ု׻ځព˭ࢫĂ ͷΞ࠻΍צ໢ޘड़ᑕޢ۞ি౻ု׻ѡቢͧࣧՄྏͯ۞ি౻

ု׻ѡቢځពгШνઐொĄ҃ౄјি౻ု׻˭ࢫ۞ࣧЯĂ Ξਕֽҋٺ໢ޘड़ᑕֹ଀੼̶̄ૄՄயϠК̼҃ጱ࡭ٺញ ჯᄃૄՄ۞ᕆ඾ّ˭ࢫĂ࡭ֹෘᓀᄃ௲ᆸඈՄफ़৿ౝĂд

ি౻࿅඀̚јܜՀࠎԣిĂֹ଀ি౻ု׻ᒺൺĄဦ9 ពϯ

ྏͯགྷԮᖼຫ๋ޢГซҖα࣎ᑕ˧ඈ৺۞ি౻၁រඕڍĄ дѩဦ̚ϤͧྵࣧՄྏͯ۞ု׻ѡቢᄃԮᖼຫ๋ޢ۞ྏͯ

۞ု׻ѡቢĂΞځព࠻΍ĂྏͯགྷԮᖼ࢑ྶޢயϠ௲ᆸຫ

๋ౄјЧᑕ˧ඈ৺˭ি౻ု׻۞˭ࢫĂֹ଀གྷԮᖼຫ๋ޢ

۞ি౻ု׻ѡቢӔன˘Шνઐொ۞ᔌ๕ĄАགྷ໢ޘड़ᑕГ གྷԮᖼຫ๋ޢ۞ি౻ု׻ѡቢᄃАԮᖼຫ๋ޢГགྷ໢ޘड़

280 270 260 250 240 230 220 210 200

19010² 10³ 10⁴ 10⁵ 10⁶

Temperature + Torque σa

= 316.47-19.59log (N_f) Torque + Temperature σa

= 301.05-18.99log (Nf)

ဦ10 གྷ໢ޘᇆᜩޢГགྷԮᖼຫ๋ᄃАགྷԮᖼຫ๋Гགྷ

໢ޘᇆᜩ̝ি౻ု׻ѡቢͧྵ

300 290 280 270 260 250 240 230 220 210 200 190

10² 10³ 10⁴ 10⁵ 10⁶

σa = 332.42-20.42log (Nf) σa = 316.47-15.59log (N_f)

Temperature Temperature + Torque

ဦ11 གྷ໢ޘᇆᜩޢГགྷԮᖼຫ๋ᄃ่གྷ໢ޘᇆᜩ̝ি

౻ု׻ѡቢͧྵ

ᑕ۞ি౻ု׻ѡቢ̝ม۞ͧྵтဦ10 ٙϯĄϤဦ̚ពϯА

ٚצԮᖼຫ๋Гགྷ໢ޘड़ᑕޢٙౄјК̼ड़ڍົͧٚצ໢

ޘड़ᑕޢГԮᖼຫ๋யϠΐј۞К̼ड़ڍᚑࢦĄЯѩΞ

ۢĂᒖဩ୧ІЯ߉ΐ۞ึԔ૟ົ၆Մफ़۞ি౻ု׻ౄј̙

˘࡭۞ᇆᜩĄ૟ဦ 6 ពன۞ࣧՄྏͯ۞ု׻ѡቢᄃဦ 10

ٙ̚ϯ̝໢ޘड़ᑕᄃԮᖼຫ๋ΐјүϡ˭۞ု׻ѡቢซҖ

ͧྵĄΞ൴னזĂٚצ໢ޘड़ᑕ̈́Ԯᖼຫ๋ΐјүϡ˭۞

ি౻ု׻ѡቢӮӔனШνઐொ۞ᔌ๕ĄϤѩΞۢĂд໢ޘ ड़ᑕᄃԮᖼຫ๋ΐј۞үϡ˭૟၆ྏͯౄј௲ᆸຫ๋Ă࡭

ֹྏͯ۞ি౻ٚྶ˧˭ࢫĄдဦ11 ̚၆གྷ໢ޘड़ᑕᇆᜩ۞

ি౻ု׻ѡቢᄃАགྷ໢ޘड़ᑕᇆᜩޢГٚצԮᖼ࢑ྶ۞ি

౻ု׻ѡቢซҖͧྵĄϤဦ̚Ξ൴னĂΪಏ৷צ໢ޘड़ᑕ ᇆᜩ˭۞ি౻ٚྶ˧ͧٚצ໢ޘ̈́Ԯᖼຫ๋ᗕࢦड़ᑕүϡ

˭۞ি౻ٚྶ˧ૻĄ҃ဦ12 ࠎགྷ໢ޘड़ᑕᇆᜩ۞ি౻ု׻

ѡቢᄃ׍Ԯᖼຫ๋ޢГགྷ໢ޘड़ᑕᇆᜩ۞ি౻ု׻ѡቢ۞

ͧྵဦĄϤဦ11 ᄃဦ 12 ۞ͧྵΞ൴னԮᖼޢГ߉ΐ໢ޘ

(7)

300 290 280 270 260 250 240 230 220 210 200 190

10² 10³ 10⁴ 10⁵ 10⁶

σa = 332.42-20.42log (Nf) σa = 301.05-18.99log (N_f)

Temperature Torque + Temperature

ဦ12 АགྷԮᖼຫ๋Гགྷ໢ޘᇆᜩᄃ่གྷ໢ޘᇆᜩ̝ি

300 290 280 270 260 250 240 230 220 210 200 190

10² 10³ 10⁴ 10⁵ 10⁶

σa = 311.4-19.92log (N_f) σa = 316.47-19.59log (N_f)

Torque

Temperature + Torque

ဦ13 གྷ໢ޘᇆᜩޢГགྷԮᖼຫ๋ᄃ่གྷԮᖼຫ๋ᇆᜩ

̝ি౻ု׻ѡቢͧྵ

ड़ᑕயϠ۞௲ᆸೋ̼ଐڶྵࠎᚑࢦĄ૟่གྷԮᖼຫ๋۞ি

౻ု׻ѡቢᄃАٚצ໢ޘᇆᜩޢГགྷԮᖼຫ๋۞ি౻ု׻

ѡቢซҖͧྵĂ఺׌୧ি౻ု׻ѡቢͧྵඕڍтဦ 13 ٙ ϯĄϤဦ̚Ξ࠻΍఺׌୧ি౻ု׻ѡቢ࠹༊ତܕĄ఺ពϯ

΍АԮᖼຫ๋ޢГٚצ໢ޘड़ᑕயϠΐј۞К̼ड़ڍ̙ព

඾Ă၆ٺি౻ု׻ᇆᜩѣࢨĄΩγĂͧྵΪٚצԮᖼຫ๋

׶АٚצགྷԮᖼຫ๋ޢГ໢ޘड़ᑕ఺׌୧ি౻ု׻ѡቢĂ тဦ14 ٙϯĄ఺׌୧ি౻ု׻ѡቢ˵࠹༊ତܕĂҭ໢ޘड़ ᑕޢГ߉ΐԮᖼ࢑ྶٙౄј۞К̼үϡᔘߏྵࠎᚑࢦĄϤ ဦ13 ᄃဦ 14 ۞ͧྵĂΞ֍໢ޘड़ᑕ߉ΐ۞ึԔ၆ٺি౻

ု׻֭՟ѣព඾۞ᇆᜩĄ

3. ሤᑅ࣒ྃ၆ি౻ု׻̶࣒ྃژ

၆׍Ԯᖼຫ๋۞ྏͯซҖሤᑅ࣒ྃĂ֭ͷ૟࣒ྃޢ۞

ྏͯซҖคШٛҩি౻၁រĂ׎ඕڍтဦ 15 ٙϯĄдဦ 15 ̚Тॡពϯ׍Ԯᖼຫ๋۞ྏͯдሤᑅ࣒݈ྃޢ۞ি౻

300 290 280 270 260 250 240 230 220 210 200 190

10² 10³ 10⁴ 10⁵ 10⁶

Cycles to failure (N_f) Stress amplitude, σa, (MPa)

σa = 311.4-19.92log (N_f) σa = 301.05-18.99log (N_f)

Torque

Torque + Temperature

ဦ14 АགྷԮᖼຫ๋Гགྷ໢ޘᇆᜩᄃ่གྷԮᖼຫ๋ᇆᜩ

̝ি౻ု׻ѡቢͧྵ

300 290 280 270 260 250 240 230 220 210 200 190

10² 10³ 10⁴ 10⁵ 10⁶

σa = 347.51-22.377log (Nf) σa = 311.14-19.92log (Nf) σa = 330.04-23.43log (Nf)

Original Torque Torque + Repair

ဦ15 ׍Ԯᖼຫ๋дሤᑅ࣒݈ྃޢᄃࣧՄ̝ি౻ု׻ѡ ቢͧྵ

ု׻ѡቢ̈́ࣧՄি౻ု׻ѡቢĄϤဦ̚ি౻ု׻ѡቢ̝ม

۞ͧྵĂΞ୻຾൴னז࣒ྃޢি౻ု׻ѡቢ࠹၆ٺ࣒݈ྃ

۞ি౻ု׻ѡቢځពгШΠઐொĂ఺ពன΍׍Ԯᖼຫ๋۞

ྏͯགྷሤᑅ࣒ྃޢ׎ি౻ု׻ྵሤᑅ࣒݈ྃѣځពԼචĄ ТॡΞ൴னሤᑅ࣒ྃੵ˞дҲᑕ˧ॎ಼үϡ˭ྵ՟ѣពன

࣒ྃड़ڍγĂд׎ι۞ᑕ˧ॎ಼үϡ˭Ă൴னি౻ု׻࠰

ѣ˘ؠ඀ޘ۞೩̿ĄГ۰Ϥ࣒ྃޢ۞ি౻ု׻ѡቢᄃࣧՄ

ྏͯ۞ি౻ု׻ѡቢ̝ม۞ͧྵĂԧࣇΞͽځព࠻΍Ăྏ

࣒ͯྃड़ڍ֭൑ڱ྿זࣧՄېၗĂ׎ࣧЯࠎྏͯЯሤᑅ࣒

ྃ҃ࢦາᕆЪĂҭѣొЊ௲ᆸ̈́ෘᓀ֭൑ڱԆБொੵĄ҃

఺ֱ՟ѣజሤᑅ࣒ྃᕆЪ۞௲ᆸ̈́ෘᓀĂົдি౻࿅඀̚

јܜ̈́ቭЪĂ࡭ֹ࣒ྃޢি౻ု׻ٚྶ˧൑ڱ྿זࣧՄې

ၗĄЯѩĂሤᑅ࣒ྃΞ૟ྏͯ׍ѣ۞௲ᆸࢬ᎕ഴ͌ҭ൑ڱ ԆБΝੵĄ၆ٺАགྷ໢ޘड़ᑕޢГགྷԮᖼຫ๋ሤᑅ࣒݈ྃ

ޢ̝ি౻ု׻ѡቢͧྵтဦ16 ٙϯĄϤဦ̚Ξ࠻΍࣒ྃޢ

۞ি౻ု׻ѡቢ࠹၆ٺ࣒݈ྃি౻ု׻ѡቢѣځពгШΠ

(8)

280 270 260 250 240 230 220 210 200 190

10² 10³ 10⁴ 10⁵ 10⁶

σa = 316.47-219.59log (Nf) σa = 329.05-21.39log (Nf)

Temperature + Torque Temperature + Torque + Repair

ဦ16 གྷ໢ޘᇆᜩޢГགྷԮᖼຫ๋дሤᑅ࣒݈ྃޢ̝ি

280 270 260 250 240 230 220 210 200

19010² 10³ 10⁴ 10⁵ 10⁶

σa = 301.05-18.99log (N_f) σa = 317.50-21.58log (N_f)

Torque + Temperature Temperature + Torque + Repair

ဦ17 གྷԮᖼຫ๋ޢГགྷ໢ޘᇆᜩޢдሤᑅ࣒݈ྃޢ̝

ি౻ု׻ѡቢͧྵ

ઐொېၗĄ఺ܑϯགྷሤᑅ࣒ྃޢĂྏͯ۞ি౻ု׻ѣځព ԼචĄซ˘ՎϤ၁រᇴፂពனĂд੼ᑕ˧ॎ಼үϡ˭Ă࣒

ྃޢি౻ု׻ځព۞ӔࢺᇴᆧΐĄдҲᑕ˧ॎ಼үϡ˭Ă

࣒ྃޢি౻ု׻۞೩̿ᔵ൒Ϊѣೀ˩࣎Ѻ̶ͧĂҭ၁ᅫ˯

׎ု׻ณ۞೩̿ᄃϏ࣒݈ྃ࠹ͧĂᆧΐ۞ি౻ု׻࠹༊

кĄᔵ൒дѩሤᑅ࣒ྃ۞୧І˭௲ᆸຫ๋൑ڱԆБజொ

ੵĂҭ௲ᆸຫ๋ࢬ᎕ѣځព۞ഴ͌ĄЯѩĂ၆ѩຫ๋ଐڶ

ٙซҖ۞ሤᑅ࣒ྃĂ׎ड़ڍߏ࠹༊̙᏾۞Ąဦ17 ࠎАགྷԮ ᖼຫ๋ޢГགྷ໢ޘड़ᑕ۞ྏͯд࣒݈ྃޢি౻ု׻ѡቢ۞

ͧྵĄϤဦ17 ̚Ξ៍၅΍Ă࣒ྃޢ۞ি౻ု׻ѡቢ࠹၆ٺ

࣒݈ྃ۞ি౻ု׻ѡቢځពгШΠઐொĂͷд̙Т۞ᑕ˧

ॎ಼үϡ˭ĂՄफ़۞ি౻ု׻࠰ѣ࠹༊඀ޘ۞೩̿Ăពϯ дѩຫ๋ଐڶ˭Ăሤᑅ࣒ྃ၆ি౻ု׻ົѣځពԼචĄТ ॡĂΞ៍၅זሤᑅ࣒ྃ၆АགྷԮᖼຫ๋Гགྷ໢ޘड़ᑕᇆᜩ

۞ྏͯĂдЧ࣎ᑕ˧ॎ಼үϡ˭Ă׎ি౻ု׻۞೩̿Ӯᐹ ٺАགྷ໢ޘड़ᑕޢГགྷԮᖼຫ๋۞ྏͯĄ

̣ăඕ ኢ

дώ͛̚ଣ੅ĂԮᖼ࢑ྶ̈́໢ޘड़ᑕ఺׌჌ᒖဩ࢑ྶ

၆ሤ๬ّኑЪՄफ़Gr/Peek дᐖၗૻޘͽ̈́คШি౻ု׻

۞ᇆᜩĄТॡдᒖဩ࢑ྶޢ၆ྏͯซҖሤᑅ࣒ྃĂ֭ͷ̶

ژд࣒݈ྃޢ׎ᐖၗૻޘᄃি౻ု׻۞ត̼Ąགྷ၁រពϯ

۞ඕڍΞᕩৼт˭Ĉ

1. 60ƨ 72 ̈ॡ໢ޘड़ᑕົౄј੼̶̄ૄՄ۞К̼Ăጱ࡭

ি౻ု׻۞ٚྶ˧ѣځព˭ࢫĂҭ၆ᐖၗૻޘ̙ົౄј К̼үϡĄ

2. ߉ΐԮ֎ቑಛд 4°Ҍ 40°̝มͷүϡѨᇴࠎ 900 ׹ѨĂ Մफ़дണዶૻޘ˯யϠֱ຋۞К̼ͷি౻ု׻ѣځព

۞˭ࢫĄҭགྷሤᑅ࣒ྃޢĂЯԮᖼ࢑ྶ҃யϠ۞௲ᆸࢬ

᎕ѣځពត͌Ăֹ଀׍Ԯᖼຫ๋Մफ़۞ি౻ု׻ѣځព

۞೩̿Ą

3. གྷԮᖼ࢑ྶГགྷ໢ޘड़ᑕᇆᜩޢ۞Մफ़Ăдᐖၗૻޘࡗ ѣ10 % ۞К̼үϡĂͷি౻ု׻ѣځព۞˭ࢫĄѩᙷ ݭՄफ़གྷሤᑅ࣒ྃޢ׎ি౻ု׻˯ѣځព۞ԼචĄ 4. གྷ໢ޘड़ᑕᇆᜩГགྷԮᖼ࢑ྶޢ۞Մफ़Ăдᐖၗૻޘ˯

֭൑ځព۞К̼Ăҭдি౻ု׻˯݋ѣځព۞˭ࢫĄѩ ᙷݭՄफ़ࣧ׍ѣ௲ᆸࢬ᎕གྷሤᑅ࣒ྃޢѣځពត͌Ăͷ

ি౻ု׻ѣځព۞೩̿Ą

5. Ԯᖼ̈́໢ޘ఺׌჌ᒖဩ࢑ྶົЯ߉ΐึԔ̙ТĂ၆Մफ़ дᐖၗૻޘ̈́ি౻ု׻ౄјК̼ᇆᜩ˵ົ̙ТĄ

ણ҂͛ᚥ

1. Ferry, J., Perreux, D., Varchon, D., and Sicot, N., “Fatigue Behaviour of Composite Bars Subjected to Bending and Torsion,” Composite Science and Technology, Vol. 59, pp.

575-582 (1999).

2. Yip, M. C., and Chi, H. M., “Axial Fatigue Behaviour of the [0/+45/45/90]2s Carbon/Epoxy Composite under Pre-torsional Fatigue loading,” Proceeding of Internation Conference on Advanced Materials, Beijing, China, pp.

863-868 (1996).

3. Yip, M. C., and Lai, K. C., “Unaxial Low Cycle Fatigue Behaviour of the CFRP Composite Laminate Under Pre-torsional Fatigue loading and Thermal Effects,”

Proceeding of the 1^st Asian-Australasian Conference on Composite Materials, Osaka, Japan, pp. 719~1-719~4 (1998).

4. Ferreeira, J. A. M., Costa, J. D. M., Reis, P. N. B., and Richardson, M. O. W., “Analysis of Fatigue and Damage in Glass-Fiber-Reinforced Polypropylene Composite Materials,” Composite Science and Technology, Vol. 59, pp. 1461-1467 (1999).

5. Lustiger, L., and Newaz, G. M., “Interlamellar Fracture

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and Craze Growth in PEEK Composites Under Cycle Loading,” Journal of Composite Materials, Vol. 24, pp.

175-187 (1990).

6. Silverman, E. M., and Jones, R. J., “Property and Processing Performance of Graphite/PEEK Prepreg Tapes and Fabrics,” SAMPE Journal, pp. 33-40 (1988).

7. Jones, R., and Lukez, R., “Extended Thermal Cycle Testing of Graphite/Epoxy Composite Struts for Space Station Applications,” SAMPL Quarterly, pp. 34-38 (1989).

8. Herakovich, C. T., and Hyer, M. W., “Damage-Induced Property Change in Composites Subjected to Cyclic Thermal Loading,” Engineering Fracture Mechanics, Vol.

25, Nos. 5/6, pp. 779-791 (1986).

9. Satoshi, K., “Damage-Mechanics Analysis of Matrix Cracking in Cross-Ply CFRP Laminate Under Thermal Fatigue,” Composites Science and Technology, Vol. 61, pp. 1735-1742 (2001).

10. Cantwell, W. J., Davis, P., and Kausch, H. H., “Repair of

Impact-Damage Carbon PEEK Composite,” SAMPE Journal, Vol. 27, pp. 30-35 (1991).

11. Yao, W. X., and Himmel, N., “A New Cumulative Fatigue Damage Model for Fibre-Reinforced Plastics,”

Composites Science and Technology, Vol. 60, pp. 59-61 (2000).

12. Wilson, T. A., and Graves, M. J., “Repair of Graphite/

PEEK APC-2 Using Thermoforming,” SAMPE Journal, Vol. 23, pp. 51-56 (1991).

13. ཧᅛߵăోछ঍ĂĶሤᑅ࣒ྃ၆Gr/PEEK ኑЪՄफ़གྷค Шি౻̈́Ԯᖼি౻̝คШি౻ု׻̝ࡁտķĂ઼፟̚ୠ

̍ ඀ ጯ ົ ௐ ˩ ̱ ب Б ઼ ጯ ఙ ࡁ ੅ ົ ኢ ͛ ะ Ă ௐ H133-H140 ࢱ(1999).

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