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研究生:蔡嘉峯
研究生(外文):CAI, JIA-FONG
論文名稱:聚酯/尼龍針織物摩擦聲響之研究
論文名稱(外文):A Study on the Friction Sound of PET/Nylon Fiber Knitted Fabric
指導教授:王冰凝邱英嘉邱英嘉引用關係
指導教授(外文):WANG, PIN-NINGCHIOU, ING-JIA
口試委員:鄭國彬何明雄王冰凝
口試委員(外文):CHENG, KUO BINGHO, MING-HSIUNGWANG, PIN-NING
口試日期:2014-06-18
學位類別:碩士
校院名稱:桃園創新技術學院
系所名稱:材料應用科技研究所
學門:自然科學學門
學類:其他自然科學學類
論文種類:學術論文
論文出版年:2014
畢業學年度:102
語文別:中文
論文頁數:69
中文關鍵詞:聚酯/尼龍針織物FAST力學參數快速傅立葉轉換最大聲響值AR係數摩擦聲響
外文關鍵詞:PET/Nylon Fiber Knitted FabricFAST mechanical parametersFast Fourier Transform (FFT)Maximum Sound Amplitude (MSA)Auto Regressive Coefficients(AR)Friction sound
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織物聲紋是指通過人耳的聽覺系統感覺到織物受摩擦所產生的聲音效果,強調在人體運動過程中,織物與織物摩擦、織物與其他裝飾物摩擦所產生的聲音。本研究以自動織物摩擦發聲測試設備,收錄聚酯/尼龍針織物之圓編針織物及經編針織物的摩擦聲響。織物摩擦聲響之時域訊號透過快速傅立葉轉換法(FFT)轉換為頻域訊號,經分析織物摩擦聲響之頻譜圖,計算出圓編織物及經編織物的聲音參數(ΔL、Δƒ、MSA、LPT),同時以自回歸公式計算最大聲響值(MSA)之AR係數,最後並對織物聲音特徵參數與FAST力學性質之關聯性進行評估。
在織物摩擦聲響研究中,將各織物聲音頻譜圖內最大聲響值,計算其平均值及標準差,並將圓編織物及經編織物之MSA各分成四類。經由分類後的頻譜圖發現,圓編織物因織物結構及纖維成分較為接近,其頻譜變化趨勢相近;而經編織物因織物結構及纖維成分差異性較大,所以造成頻譜變化較明顯。在織物摩擦聲響與力學性質分析方面,以相關性分析法對FAST系統的力學參數和織物摩擦聲響之關係進行研究,再以逐步回歸方法找出圓編織物及經編織物之關鍵力學參數。研究結果發現,圓編織物及經編織物所篩選的關鍵力學參數兩者不盡相同,圓編織物選入有拉伸性質、壓縮性質、彎曲性質及重量;經編織物選入有拉伸性質、壓縮性質、彎曲性質及成形性。研究發現在FAST系統力學性質中,壓縮性質、彎曲性質、拉伸性質、成形性及重量,對聚酯/尼龍針織物摩擦聲響有比較重要的影響。
Friction sound of the fabrics refers to the audible sound pattern caused by body movements when fabrics rubbing against themselves or other personal articles. In this study, the friction sound produced by PET/Nylon blends of circular knitting and by those of warp knitting was recorded by an automatic friction sound test equipment so as to analyze their frequency spectrum through Fast Fourier Transform. With the time-domain signals transformed into frequency domain signals, the Maximum Sound Amplitude of circular knitting and warp knitting was calculated through autoregressive formula so that correlations between Auto Regressive Coefficients of the sound and FAST mechanical properties could be assessed.
For further assessment, MSA was divided into four separate groups based on their average value and standard deviation, which indicated the frequency spectrum of circular knitting demonstrated in similar manner due to their similar fabric construction and fiber Component, whereas the frequency spectrum of warp knitting varied significantly due to noticeable variation in fabric construction and fiber Component. The correlations between the friction sound and its mechanical properties as well as between that and the FAST system were analyzed through stepwise regression in order to find out critical mechanical parameters of circular knitting and the warp knitting. The results show that critical mechanical parameters varied, to some degrees, with the FAST system mechanical properties. The compression performance, bending and stretching have considerable effect on the friction sound of circular knitting and warp knitting .

中文摘要 I
英文摘要 III
誌 謝 V
目錄 VI
圖目錄 VIII
表目錄 X
符號說明 XI
第1章 序論 1
1.1 前言 1
1.2 織物摩擦聲響機台 5
1.3 聲音參數 6
1.3.1 基礎聲壓參數 7
1.3.2 波的定義 8
1.4 FAST織物客觀評估系統 9
1.5 織物摩擦聲響之相關統計分析 9
1.5.1 迴歸分析 10
1.5.2 參數選取之評估 13
1.5.3 迴歸模式之評估 14
1.6 自迴歸模型 18
1.7 研究動機與目的 19
第2章 實驗 20
2.1 實驗架構 20
2.2 實驗材料 21
2.3 實驗儀器與量測方法 23
2.3.1 FAST 織物測試系統 23
2.3.2 自動摩擦發聲測試設備 27
2.4 摩擦聲響數據處理與分析 30
2.4.1 訊號處理 30
2.4.2 平緩化處理 30
2.4.3 最大聲響值(Maximum Sound Amplitude, MSA) 30
2.4.4 總聲壓值(Level Pressure of Total Sound) 30
第3章 結果與討論 32
3.1 針織織物之最大聲響值(MSA)分類 32
3.2 針織織物聲音參數之相關分析 49
3.3 針織織物FAST系統十一項力學性質之相關分析 51
3.4 針織織物聲音參數與十一項力學性質之相關分析 55
3.5 針織織物聲音參數與十一項關鍵力學參數之選取及比較分析 57
第4章 結論 65
參考文獻 67

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