本文研究重點為航空器機身結構連接件環境腐蝕因素之探討，由於臺灣屬於海島型氣候，四面環海空氣潮濕且含有鹽分及酸性汙染物等物質，然航空器結構係金屬合金製造組合而成，各類汙染因子容易使航空器金屬部分材質產生腐蝕，再加上安裝螺桿磅數應力及航空器飛行時所產生的振動，導致航空器機身結構上的連接件所承受力量較大，容易產生裂紋；綜合上述原因使連接件產生的裂紋及腐蝕逐漸嚴重，降低飛機結構強度及可靠度影響飛行安全；因此，為了有效改善及避免航空器連接件上所產生裂紋進而導致飛安事件發生，本研究模擬航空器在嚴酷的運作環境下，觀察記錄連接件上的裂紋及腐蝕成長現象；分別安裝以大、中、小磅數的螺桿及鉚釘鉚合於鋁板上；分別放入不同鹽度水中（3.5％、1.8％）藉以觀察連接件上的裂紋成長及腐蝕狀況，最後選取最為嚴重的環境置入海拉克高剪力鉚釘（美方維修方法）安裝的鋁板，以比較是否能有效改善裂紋及腐蝕成長狀況；最後再製作兩組各四個試驗物件，一組放入鹽水、一組不放入，兩週後對兩組試驗物件實施拉伸試驗比較各試件強度；經過一系列腐蝕實驗及拉伸試驗結果得知，美方對主要結構樑加強片產生裂紋維修後使用海拉克鉚釘取代實心鉚釘，確實更換海拉克鉚釘會加強航空器的結構應力，但受臺灣氣候環境因素影響，一但海拉克鉚釘受到腐蝕的侵蝕它的強度就會低於實心鉚釘，吾人認為目前台灣航空器所要面對造成機身結構破壞的主因是腐蝕，即使航空器本身因飛行、起降落所造成震動或人為因素也會造成機身結構破壞，但都只佔少數。
  過去飛安失事事件上有許多肇因是因為腐蝕及裂痕所造成，又加上維修人員疏失導致飛安失事發生，面對航空器維修吾人應當抱持著謹慎及防微杜漸的心態，避免遺漏一些不起眼的缺失，如腐蝕或裂痕進而嚴重擴大，不至於遺憾事件發生。

This paper focuses on the discussion of environmental corrosion factors of aircraft fuselage structural connectors. Because Taiwan belongs to an island climate, the air is surrounded by the sea and contains salt and acid pollutants. However, aircraft structures are made of metal alloys. The pollution factors can easily cause corrosion of the metal parts of the aircraft, coupled with the stress of the installation screw pounds and the vibration generated during the flight of the aircraft, the connecting parts on the aircraft fuselage structure are subject to a large force and are prone to cracks; the above reasons are combined. The cracks and corrosion caused by the connecting parts are gradually serious, reducing the structural strength and reliability of the aircraft and affecting the flight safety; therefore, in order to effectively improve and avoid the cracks generated on the connecting parts of the aircraft and lead to the occurrence of the flight safety incident, this study simulates the severe Under the operating environment, observe and record the cracks and corrosion growth on the connecting parts; install the screws and rivets with large, medium and small pounds riveted on the aluminum plate; put them in different salinity water (3.5%, 1.8%) In order to observe the crack growth and corrosion conditions on the connecting parts, finally select the most severe environment and place the aluminum plate installed by Hi-Lok Fasteners (American maintenance method) to compare whether it can effectively improve the crack and corrosion growth status. finally make Two groups of four test objects, one group with salt water and one group without, after two weeks, perform tensile test on the two groups of test objects to compare the strength of each sample; after a series of corrosion experiments and tensile test results, we know , The American maintenance method replaced the solid rivets with Hi-Lok Fasteners after repairing the cracks on the main structural beam reinforcement. Indeed, replacing the Hi-Lok Fasteners will strengthen the structural stress of the aircraft, but affected by Taiwan’s climate and environmental factors, once the Hi-Lok Fasteners are corroded by corrosion The strength of the Hi-Lok Fasteners will be lower than that of rivets. I think that the main cause of the damage to the fuselage structure of the Taiwanese aircraft at present is corrosion. 
    In the past, many causes of Airplane Crash were caused by corrosion and cracks. In addition, due to the negligence of maintenance personnel, Airplane Crash occurred. In the face of aircraft maintenance, we should maintain a prudent and preventive attitude to avoid missing some unremarkable things. The lack of corrosion, such as corrosion or cracks, has been severely enlarged, so there is no regret about the incident.

第一章 緒論...................................1
    1.1前言..................................1
    1.2研究動機...............................1
    1.3論文結構...............................3
第二章 相關文獻與理論..........................4
    2.1腐蝕定義...............................4
    2.2腐蝕成因...............................4
    2.3腐蝕理論...............................5
    2.4腐蝕種類概述...........................................6
    2.5文獻回顧...............................8
第三章 研究方法設計與步驟......................12
    3.1國軍直升機所面臨的腐蝕或破壞情況.........12
    3.2美方處理方式...........................13
    3.3研究方法與步驟.........................14
第四章 實驗研究…..............................15
    4.1實驗設計與規劃……………....................15
    4.2實驗結果與討論.........................95

第五章 拉伸實驗...............................97
    4.1拉伸實驗..............................97
    4.2拉伸實驗結果與討論.....................100
第六章 結論與建議.............................106
參考文獻.....................................107
附錄 論文簡要版...............................108

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