آنالیز حرارتی (ترموگرافی)

  • عملكرد هر دستگاه همواره با انتشار گرما همراه مي باشد. اين گرما مي­تواند ناشي از فرآيندهاي تبديل انرژي مثل احتراق، گرمايش الكتريكي  ناشي از عملكرد نيروهاي اصطكاك و يا تنش­هاي مكانيكي باشد. انرژي آزاد شده پس از رسيدن به سطح دستگاه از طريق تشعشع و جابجايي آزاد مي­شود. كليه سطوح بسته به ميزان درجه حرارتشان داراي يك نرخ تشعشع در ناحيه مادون قرمز مي‎باشند. اين تشعشع براي چشم انسان نامريي ‎بوده كه از سيستم ترموويژن جهت مرئي كردن آن استفاده مي­گردد. سيستم ترموويژن در محل‎ها و دستگاه­هايي كه عامل گرما مي­تواند فاكتور مهمي در بازگويي مشخصات دستگاه باشد، قابل بهره برداري است. در حال حاضر اين سيستم بطور گسترده­اي در ماشين هاي الكتريكي، ترانسفورماتورها، ژنراتورها، رله‎هاي الكتريكي، بريكرهاي قدرت، شافت و ياتاقان و كوپلينگ فن­هاي الكتريكي در حال استفاده مي­باشد.


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