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Nanjing University
Institute of Acoustics
Nanjing 210093
P.R. China

1. Member Institution

 Institute of Acoustics, Nanjing University  

2.  Contact Person 

 Shu-yi Zhang, Director of the Institute of Acoustics 
 Nanjing University
 Nanjing 210093 China 

zhangsy@nju.edu.cn            or             paslab@nju.edu.cn 

0086-25-3593310 (Tel) 
0086-25-3605557 (fax) 

3.   Profile of Institution

Nanjing University (NU) is a major research university of  China, which was developed at the bases of Shang-Jiang  Normal School founded in 1902 and then National Southeast University, National Central University, and Jin-Ling University, etc. Recently, Nanjing University has become  one of the top five universities in China due to its research and teaching activities. Now the university has 36  Departments including Liberal Arts, Technologies, Bio-Medical Sciences, Geo-Sciences, International Business  Managements, etc.

The Institute of Acoustics of Nanjing University (IANU) formally established in 1978 is the outgrowth of the Acoustics Faculty organized in 1954 under the leadership of  Professor Rong-jue Wei, the former Director of the Institute. IANU has engaged in acoustical researches for more than 40 years. In the early of 60's, several groups in  the Institute have studied molecular, ultrasonic propagation and attenuation in suspensions and solids including superconductors in low temperature in experiment  and theory. Since the end of 70's, there have been six  laboratories, including physical acoustics, ultrasonics, SAW, environmental acoustics, electro-acoustics and speach  signal processing. Recently, there are four main research  fields of Nonlinear Acoustics, photoacoustic science, interaction between ultrasound and materials, and acoustic  signal Processing. Now, Non-Destructive Evaluation (NDE)  has become one of the major subjects in the research projects of IANU. Three aspects have been included in NDE  activites in the Institute: 

(1)  Photoacoustic and photothermal, and laser ultrasonic  characterizations. 
(2).Linear and/or nonlinear ultrasonic  propagation and evaluation of materials. 
(3).R & D of  transducers and sensing. 

NDE ACTIVITIES 

1. Principal Mission of NDE Activities

    IANU has five major objectives: 

  • To study the mechanisms of different NDE fields in theory and  experiment.


  • To persue research in NDE problems of industries and transfer the advanced techniques to industrial applications.


  • To enhance NDE training of students in undergraduate and  graduate programs.

  • To apply measurement methodology to other related areas, such as, electrical, biomedical, and agricultural areas.       

  • To drive the activities for founding of the international and  national network to exchange NDE training programs,  techniques, and results, as well as applications to  industries. 

2. Technological Environment 

IANU is one of major institutions engaging in acoustics research  in China. The institute is mainly supported by the Education Ministry and Natural Science Foundation of China, and different government organizations of Jiangsu Province.  The institute is usually in cooperation with other departments of the university, and other universities,  industrial institutions at home and abroad, including  technician training and manufacturing services. 

3. Departments/Centers Involved in NDE 

IANU has strong ties with the Department of Electronic Science and Engineering, Department of Physics, and also  has collaboration with departments of material Sciences, Computer Sciences, Chemistry, Geology, etc. The work of  IANU is conducted by a mix of faculties, graduate students  and postdoctors, etc. 

4.   Number of Scientific Personnel in Various Categories 

Principal Investigators       

Faculty - 14 
Postdoctorial Students - 2
Graduate Students - 51 
Undergraduate Students - 20 

5.   Internet/ Networking 

Institutional Web Site:       www.nju.edu.cn 

Contact Person for Computer Networking:  
 

Dong Zhang
Institute of Acoustics 
Nanjing University 
Nanjing 210093, China

 6.   Education Activities

 a. Undergraduate 
 

Minor in Nondestructive Evaluation

The education activities of IANU are subordinated to the Department  of Electronic Science and Technology. The minor consists of  a series of NDE-related courses, they are: 

Fundamental Acoustics 
3rd Year Undergraduate Course
60 Hours Lecture 
Topics: Mechanical vibration, Analogy between electricity-mechanics-acoustics, Acoustic wave radiation, propagation, and scattering, Acoustic velocity and  attenuation in gases, liquids and solids, etc.

Ultrasonic Engineering 
 3rd Year Undergraduate course
45 Hours Lecture 
Topics: Ultrasonic microscopy, SAW  Propagation and Transducers, Measurement  methods of acoustic  velocity and attenuation, etc. 

Supporting Disciplinary Courses:

  • Electro-Magnetic Field Theory 

  • Principle and Application of Computer:  Hardware and Software

  • Modern Electronics:  Lecture and Experiment         

  • Principle of Sensing 

  • Microwave Principle and Engineering          

  • Computational Algorithm 

 b. Graduate Program 

Examples of NDE related graduate courses: 

  • Theoretical Acoustics: 

1. Nonlinear Acoustics 
2.Acoustic Waves in Solids         

  • Signal Processing 

  • Ultrasonic Nondestructive Evaluation          

  • Photoacoustic Sciences          

  • Ultrasonic Electronics 

  • Medical Ultrasonic Engineering          

  • Ultrasonic Measurement 

  • Modern Acoustical Experiments          

  • Progress in Acoustics          

  • Pattern Recognition

c.  Continuing Education Programs 

  • Visiting scholar training 

  • Short school program for training engineers and technicians in factories 

  • collaboration with related  organizations

 d.  Exchanges 

Recently, foreign scientists who have spent a sabbatical of 4 - 6 months in IANU to give lectures and/or cooperation  research in the fields of NDE, include: 

  • Professor P.K.Kuo
    Wayne State University, USA
    (1995) 

  • Professor D.Y.Chung
    Howard University, USA 
    (1997) 

  • Associate Professor K.L.Ha
    Pukyong National University,  Korea
    (1997) 

 7.   Research Activities 

Research at the IANU includes both aspects: 

a.  Fundamental research and applied fundamental research:

 (1). Photoacoustic, laser-ultrasonic, and  thermal wave  characterizations: 

  • Photoacoustic and thermal wave characterization of advanced materials 

  • Reconstruction of thermal parameter depth-profiling 

  • Laser ultrasonic characterizations of materials 

  • Non-contact detection techniques   

  • Other energy sources 

(2). The theoretical and experimental studies on ultrasonic  propagation: 

  • The bulk (longitudinal, transverse) acoustic waves surface acoustic wave (SAW),  and Lamb waves propagations 

  • The Design, fabrication and dynamic model analysis of new types of ultrasonic transducers 

  • Ultrasonic computer tomography (CT) Inversion and reconstruction of multiparameters by  elastic waves 

(3). The theoretical and experimental studies on nonlinear ultrasonic effect: 

  • Nonlinear propagation characteristics of finite amplitude acoustic waves in solids 

  • Measurements of nonlinear parameters              

  • Determination of third order elastic constants 

  • The temperature coefficients of nonlinearity

b.  Applied research

(1).  Design and fabrication of SAW devices          
(2). Design and fabrication of ultrasonic transducers
(3). Parameter characterization of advanced materials

8.  Links with Industries

IANU always cooperated with engineers of the factories, such as semiconductor factories, mechanical factories, and oil  fields, and also solid state devices factories.

9. Links with other organizations

  •  IANU always links with other organizations at home and abroad:

  • The Acoustical Society of China

  • The Mechanical Engineering Society of China

  • The Institute of Acoustics, Chinese Academy of  Sciences

  • Institute of Electrical and Electronic Engineers

  • The International Centre for Theoretical Physics (Italy)

10. Funding

 A number of government agencies and industrial  consortia support major research program in IANU:

  • The National Commission of Science and Technology of  China

  • The Ministry of Education of China

  • The Ministry of Electronic Industry of China

  • The National Natural Science Foundation

  • UNESCO

  • IUPAP World Bank


 

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