Sound Waves and Acoustic Emission (聲波與聲學發射)

聲音的本質如今已被廣泛了解，因此聲音可以被合成地描述為在彈性媒介中振動的傳播。聲波以縱波、橫波或在不同媒介中以混合模式傳播。與聲波相關的信息的適當管理應用的發展，這就是所謂的聲學發射的情況。本書介紹了聲波的基本知識、其類型、在不同模式中的傳播、速度及其他特性。它還介紹了聲學發射的基本知識及其不同來源。本書提供了不同的傳播模式、其重要性，以及聲波的衰減和失真。聲學發射的一個被忽視的應用，即聲學超聲方法，將被介紹並討論其實際應用。

Claudia Barile

Claudia Barile is Assistant Professor at Politecnico di Bari where she is also lecturer at the Bachelor and Master Degree of Industrial Design and at the Master Degree of Mechanical Engineering. Her main research interests are connected with material characterization and experimental mechanics including strain gauges methods, acoustic emission and residual stress analysis. She is member of the PhD committee in Mechanical and Management Engineering at Politecnico di Bari. She is author of more than one hundred papers published in international journals and conference proceedings. She is co-author of five books and member of international and national associations including the Society of Experimental Mechanics, the European Society of Experimental Mechanics and the Società Scientifica Italiana di Progettazione Meccanica e Costruzione di Macchine.

Giovanni Pappalettera

Giovanni Pappalettera is associate Professor at Politecnico di Bari where he is also lecturer at the Bachelor and Master Degree of Industrial Design and at the Master Degree of Mechanical Engineering. His main research interests are connected with material characterization and experimental mechanics including optical methods, acoustic emission and residual stress analysis. He is member of the PhD committee in Mechanical and Management Engineering at Politecnico di Bari. He is author of more than one hundred papers published in international journals and conference proceedings and is co-inventor of three patents. He is co-author of two books and member of international associations including the Society of Experimental Mechanics and the European Society of Experimental Mechanics.

Paramsamy Kannan Vimalthithan

Vimalathithan Paramsamy Kannan is a researcher at Politecnico di Bari, Italy, where he obtained his Ph.D. degree with honors in 2021. His research interests include the Mechanical Characterization of Engineering Materials through Non-destructive Evaluation techniques, particularly the Acoustic Emission technique. He also has a special interest in the Characterization of Polymer-based Composite Materials. He has published more than 30 articles in international conferences and peer-reviewed journals on the Acoustic Emission techniques.

Caterina Casavola

Prof. Casavola is a full professor of Mechanical Design at Politecnico di Bari and she teaches the Design of Innovative Materials, Experimentation on Aerostructures, and Experimental Mechanics. Prof Casavola's research activity is concerned with the mechanical characterization of innovative materials, experimental stress analysis on real components (1:1 scale) and in situ inspection, study of residual stress generation, evolution and measurements (hole drilling method both with strain gage rosette and ESPI, X-Ray diffractometer, Barkhausen noise), and monitoring of electronic board and components by means of speckle interferometry. Prof. Casavola is the Scientific Director of the Laboratory of Static and Dynamic tests, the Laboratory of Residual Stresses, the Laboratory of Experimental Stress Analysis, Laboratory EMILIA (Experimental Mechanics Integrated Laboratory In Aerospace), and the Laboratory of Telemetry at Politecnico di Bari.

克勞迪亞·巴里萊
克勞迪亞·巴里萊是巴里理工大學的助理教授，同時也是工業設計學士及碩士學位課程以及機械工程碩士學位課程的講師。她的主要研究興趣與材料特性及實驗力學有關，包括應變計方法、聲發射及殘餘應力分析。她是巴里理工大學機械與管理工程博士委員會的成員。她已在國際期刊和會議論文集中發表超過一百篇論文，並且是五本書的共同作者，還是包括實驗力學學會、歐洲實驗力學學會及意大利機械設計與機械建造科學學會等國際及國內協會的成員。

喬凡尼·帕帕萊特拉
喬凡尼·帕帕萊特拉是巴里理工大學的副教授，同時也是工業設計學士及碩士學位課程以及機械工程碩士學位課程的講師。他的主要研究興趣與材料特性及實驗力學有關，包括光學方法、聲發射及殘餘應力分析。他是巴里理工大學機械與管理工程博士委員會的成員。已在國際期刊和會議論文集中發表超過一百篇論文，並且是三項專利的共同發明人。他是兩本書的共同作者，並且是包括實驗力學學會及歐洲實驗力學學會等國際協會的成員。

帕拉馬薩米·坎南·維馬拉提坦
維馬拉提坦·帕拉馬薩米·坎南是巴里理工大學的研究員，他於2021年以優異成績獲得博士學位。他的研究興趣包括通過非破壞性評估技術對工程材料進行機械特性分析，特別是聲發射技術。他對聚合物基複合材料的特性分析也有特別的興趣。他已在國際會議和同行評審期刊上發表超過30篇有關聲發射技術的文章。

卡特里娜·卡薩沃拉
卡特里娜·卡薩沃拉教授是巴里理工大學的機械設計全職教授，教授創新材料設計、航空結構實驗及實驗力學。卡薩沃拉教授的研究活動涉及創新材料的機械特性分析、實際元件（1:1比例）的實驗應力分析及原位檢測、殘餘應力的產生、演變及測量（包括使用應變計玫瑰花及ESPI的鑽孔法、X射線衍射儀、巴克豪森噪聲），以及通過散斑干涉法監測電子電路板及元件。卡薩沃拉教授是巴里理工大學靜態與動態測試實驗室、殘餘應力實驗室、實驗應力分析實驗室、航空實驗力學綜合實驗室（EMILIA）及遙測實驗室的科學主任。