Dr. M. V. REDDY

 


 

Name             : Dr. M. Venkatarama Reddy

Designation  : Professor of Mechanical Engineering

Qualification: Ph.D. (Engg)

Ph.D. Research Topic (2003):

"Expert System for the Analysis of Fatigue-Fracture Problems Related to Steel Structures"

Synopsis:

 

The advances in modern technology demands more sophisticated methodology for the validation of structural integrity of engineering components and structures during service conditions. The pre-requisites for assessing structural component behavior is a  knowledge of mechanical in particular fatigue-fracture behavior of materials. This helps in forecasting its useful life and to develop inspection and service procedures.

 

This thesis makes an attempt to provide the necessary background details of fracture mechanics and fracture parameters needed in Damage Tolerant Design (DTD). The two broad approaches, Linear Elastic Fracture Mechanics (LEFM) and Elastic-Plastic Fracture Mechanics (EPFM) adapted in fracture analysis are discussed at length. Different methods of evaluating fracture parameters with their relative merits and demerits are presented through some illustrative examples.

 

The thesis further brings out the potentials of Artificial Intelligence (AI) and Expert Systems (ES) and their applications in engineering with special relevance to design and manufacturing. The applications of ES for the study of fracture problems are also dealt with.

 

The major contribution of the thesis is the development of four ESs useful to the designer in Damage Tolerant Design. The different expert systems developed are as follows:

 

1)       Expert system for information retrieval on fracture mechanics and fracture parameters relevant to DTD;

2)       Expert system for the design against fracture of high and low strength materials;

3)       Expert system for retrieval of Stress Intensity Factor (SIF) for linear elastic fracture analysis of brittle materials and

4)       Expert system for retrieval of J-Integrals for the elastic-plastic fracture analysis of ductile materials. 

 

The first ES provides information on important definitions, classifications and fracture parameters associated with fracture mechanics, modes of fracture, Westergaard’s stress and displacement field equations, material property database, standard crack configurations database, rule base, etc. In essential it provides the basic knowledge and guidelines relevant to fracture mechanics to the designer for the use of other three ESs. The second ES helps the designer to classify the given material (from which the structure is built) into high and low strength material, then the appropriate fracture mechanics approach to be used, and, further the validation of the safety of the design. The third ES provides the much needed information of SIFs required in the LEFM analysis of brittle fractures. Several commonly encountered configurations are included in the database for a variety of loading and boundary conditions.  The information of J-Integrals for limited number of crack configurations is provided by the fourth and last ES.

 

The ESs are developed using programming language C++ in Turbo C environment. Its graphic capabilities are utilized in developing an efficient user-system interface. The ESs developed were validated by comparing their values with the ones obtained using FEM approaches for some selected crack configurations.

 

 

Education:

 

1.      Ph.D. in Engineering [Research Topic: “Expert System for the Analysis of Fatigue- Fracture Problems related to Steel Structures”] from Bangalore University, 2003

2.      M.E (Machine design) from University Visvesvaraya College of Engineering, Bangalore University, Bangalore 560 001, 1980

 

3.      B.E. (Production) from University Visvesvaraya College of Engineering, Bangalore University, Bangalore 560 001, 1978

 

Professional Experience:

 

1.      Professor in Mechanical Engineering, Bangalore Institute of Technology, Bangalore since 2004 to till date.

2.      Assistant professor in Mechanical Engineering, Bangalore Institute of Technology, Bangalore from 1986 to 2004.

3.      Lecturer in Mechanical Engineering from 1983 to 1986 in  Bangalore Institute of Technology, Bangalore

4.      Lecturer in Mechanical Engineering from 1982 to 1983 in R.V.College of Engineering, Bangalore.

5.      Lecturer in Mechanical Engineering from 1980 to 1982 in University Visvesvraya College of Engineering, Bangalore -01.

 

Fields of Research:

 

1.      Solid Mechanics, Finite Element Analysis

2.      Expert Systems

3.      Linear Elastic Fracture Mechanics

4.     Elasto-Plastic Fracture Mechanics

 

Publications:

 

1.      K.S. Shivakumar Aradhya, M. Venkata Rama Reddy, N. Govindaraju, "Development of an Expert system for the Evaluation of Stress Intensity Factor", 47th conference of the Indian Society of Theoretical and Applied Mechanics, IIT Guwahati, India, December 20-23, 2001.

 

2.      M. Venkata Rama Reddy, K.S. Shivakumar Aradhya, N. Govindareju, "Development of an Expert system for the Evaluation of Stress Intensity Factor", 47th conference of the Indian Society of Theoretical and Applied Mechanics, IIT Guwaahati, India , December 20-23, 2001.

 

3.      M. Venkata Rama Reddy, K.S. Shivakumar Aradhya, N. Govindaraju. "Development of Expert System for the Evaluation of J- Integral for Facture Analysis, "National Conference on Advance Trends in Mechanical Engineering Research and Development ( MINAC - 2002), JNTU, Ananthapur, Andra Pradesh, Dec. 21-22, 2002.

4.      M. Venkata Rama Reddy, K.S. Shivakumar Aradhya, N. Govindareju, "Comparative study of Theoretical and FEM values of J- Integral for Facture Analysis", National Conference on Advance Trends in Mechanical Engineering Research and Development ( MINAC - 2002) JNTU, Ananthapur, Andra Pradesh, Dec. 21-22, 2002.

5.      Venkata Rama Reddy, M., Shivakumar Aradhya, K.S. and Govindaraju, N., 2003, “Development of an Expert System -- A case study for the Evaluation of J-Integrals for the Analysis of Thin Cylindrical Shells Subjected to Internal Fluid Pressure”, Proc., National Conference on  Emerging Trends in Engineering, Technology and Management” Adhiyamaan  Engineering College, Hosur, Tamilnadu, India.

6.      Venkata Rama Reddy. M., Vijayashimha Reddy, B.G., Pradeep, M., Kumar, K. and   Govindaraju, N., 2003, “Study of Fracture Parameters of a Pressure Vessel Subjected to Internal Pressure” Proc., National Conference on Emerging Trends in Engineering, Technology and Management, Adhiyamaan  Engineering College, Hosur, Tamil Nadu, India.

1.      Venkata Rama Reddy. M., Seenappa., Pradeep, M., Kumar, K. and   Govindaraju, N., 2003,      “Retrieval of J- Integrals for Inclined Crack, Sub-Surface Crack, Center Through Crack by using Finite Element Analysis” Proc., National Conference on Emerging Trends in Engineering , Technology and Management”, Adhiyamaan  Engineering College, Hosur, Tamil Nadu, India.

2.      Venkata Rama Reddy. M.,  Pradeep, M.,  Naveen Babu Chandhu., Rajan Bharadwaj., Kumar, K. and Ramachandra, K., 2003, “Influence of  Taper, Twist and Thickness in Rotor Blades by using Finite Element Analysis”, Proc., National Conference on Emerging Trends in Engineering , Technology and Management, Adhiyamaan  Engineering College, Hosur, Tamil Nadu, India.

3.      Venkata Rama Reddy. M., Jnanasheker, K., Manjunatha Shreyas., Kumar, K. and Govindaraju, N., 2003, “Fillet Optimization of a Stepped Shaft subjected Bending and Axial Loads”, Proc., National Conference on Emerging Trends in Engineering, Technology and Management” Adhiyamaan Engineering College, Hosur, Tamil Nadu, India.

4.      Venkata Rama Reddy. M.,  Rajan Bharadwaj.,  Naveen Babu Chandhu., Pradeep, M.,  Kumar, K. and Govindaraju, N., 2003, “Study of Vibration Characteristics of 3 Rotor System FEM results Comparing  it with Holzer  and Stodola Method”, Proc., National Conference on Emerging Trends in Engineering,  Technology and Management, Adhiyamaan  Engineering College, Hosur, Tamil Nadu, India.

 

Contact Details:

 

Professor of Mechanical of Engineering Department

Bangalore of Institute of Technology                                                            

K.R. Road, V.V. Puram, Bangalore 560 004, India

 

Home:

 

# 109, 12th cross end, near BTS Road,

Narayanapura ward, Wilson garden,

Bangalore -560 030, India

                                                       

E-Mail: drmvr_bit@yahoo.co.in

 

Phone : 080-22249763(R); 080-26613237(O)

Mobile: 9886349761

 

 

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