Yitzchak Yifrach

Yitzchak Yifrach

Yitzchak Yifrach

Department: Mechanical Engineering
Current Position: Senior Teacher, and head of design and manufacturing studies - Mechanical Engineering

Education :

M.Sc.
1991, Mechanical Engineering. Faculty of Mechanical Engineering, Technion – Israel Institute of Technology, Haifa, Israel.

Dissertation: “Development of a specimen for fracture toughness measurement in brittle materials”.

Advisors: Prof. J. Tirosh and Prof. E. Altus.

B.Sc.1982, Mechanical Engineering. Faculty of Mechanical Engineering, Technion – Israel Institute of Technology, Haifa, Israel.

Research Interests
  • 1. Analysis forces and temperature in Machining processes at the cutting zone by finite element method and by experiments
  • 2. Mechanical design of machine elements
  • 3. Analysis of machine elements using finite element method
  • 4. Fracture mechanics
Courses
  • 1. Introduction to Machine Design
  • 2. Machine Design elements
  • 3. Machine Design Element Project
  • 4. Robotics
  • 5. Machining processes of Metals
  • 6. Computer Integrated Design and Manufacturing Systems

Files

Filename
Date
Type
CV_yifrach-13_November_2019
13/11/2019
Refereed Papers
1991 Tirosh, J., Altus, E., Yifrach, Y., 1992, “A new method for evaluating fracture toughness of brittle materials”, Int. J. Fracture 58:211-222.

 

Plenary and invited talks at conferences

 

National conference papers

 

Oct 2019 Yitzchak Yifrach*, Koby Ben Dahan, Erez Dahan

Temperature Prediction in the cutting zone and temperature distribution of along the cutting tool by slot milling using a numerical analytical thermal model and comparing it to the results of experiments

The 15th Interdisciplinary Research Conference ORT Braude College

October 23-24, 2019, Pastoral Hotel, Kfar Blum, Israel

 
Oct 2018 Yitzchak Yifrach*, Mor Elgarisi: Development of cutting force and cutting power prediction program by finite element method (FEM) and experimental investigation for predicting cutting zone temperature in micro end milling machining of metals

The 14th Interdisciplinary Research Conference ORT Braude College

October 17-18, 2018, Pastoral Hotel, Kfar Blum, Israel

Oct 2017 Yitzchak Yifrach*, Mor Elgarisi: Developing a finite element model for predicting cutting zone temperature in micro Grinding of ceramics and in side (micro end milling) of Aluminum 6061-T6

The 13th Interdisciplinary Research Conference ORT Braude College

October 25-26, 2017, Nahsolim Seaside Resort, Israel

 

Oct 2017 Yitzchak Yifrach*, Mor Elgarisi: Developing a finite element model for predicting cutting zone temperature in micro slot Grinding of ceramics and in slot (micro end milling) of Aluminum 6061-T6

The 13th Interdisciplinary Research Conference ORT Braude College

October 25-26, 2017, Nahsholim Seaside Resort, Israel

Sep 2016 Yitzchak Yifrach*, Omri Levi, Elad Yehouda: Finite Element Model (FEM) Development and analyzing in end-milling process for cutting zone temperature prediction for metals and ceramic materials.

The 12th Interdisciplinary Research Conference ORT Braude College

September 28-29, 2016, Hagoshrim Hotel, Upper Galilee, Israel

International conference papers
Oct 2018 Participation in the Erasmus Conference from 19 October to 26 October at the University of Vidzeme Valmiera, Latvia. During the conference I gave two lectures:

1.      Mechanisms of fatigue failure of materials and structures

2.       Development a thermal-mechanical model in finite element method for predicting temperature and forces in the cutting zone by machining metals.

June 2013 Yitzchak Yifrach*, Uri Ben-Hanan.: Cutting zone temperature and specific cutting energy measurement and evaluation in machining Metals and ceramic.

13th International Conference on Fracture June 16–21, 2013, Beijing, China

International academic and research cooperation
Dec 2006 Visiting the department of Mechanical Engineering at the Indian Institute of Technology Guwahati in order to check academic and research cooperation with the Ort Braude College. December 2006, Guwahati, India

 

 

 

TEXTBOOKS (IN HEBREW) FOR ORT BRAUDE COURSES
2005 Y. Yifrach, Introduction to Machine Design, 2005
2005 Y. Yifrach, Manufacturing Machining Processes, 2005
2005 Y. Yifrach, Machine Design, 2005
2004 Y. Yifrach, Manufacturing Process, 2004
2003 Y. Yifrach, Robotics, 2003
2001 Y. Yifrach, Computer Integrated Manufacturing (CIM), 2001

SELECTED LIST OF CONSULTING PROJECTS
April 1999 Development of teaching program for undergraduate Courses in Statics, Dynamics and Fluid mechanics.

Customer :Ministry of Work, Israel

May 1999 Thermal analysis for an antenna unit.

Customer: Celletra, Yoqne’am Israel.

May 1993 The behavior of stress intensity factor K1 in ceramic square plate with a central hole with a variable length crack caused by a unidirectional compression load.
Customer: Prof. E. Altus, and J.Tirosh, Faculty of Mechanical Engineering, Technion – Israel Institute of Technology, Haifa Israel.
January 1995 Final report on program that carries out transformation on data files containing elevation points of whole Israel. The purpose of the program is to create files of 1degree * 1degree with a grid, by carrying out interpolation to calculate the required point whilst knowing 4 points in that surrounding area.

Customer: Qualcomm Israel, Haifa

April 1992 The behavior of stress intensity factor K1 on a channel beam with a variable length crack caused by a unidirectional compression load.

Customer: Prof. J. Tiros, Faculty of Mechanical Engineering, Technion – Israel Institute of Technology, Haifa Israel.

Sep 1991 Effect of a soft layer on the stress intensity factor K1 of a transverse crack caused by a vertical compression load. Customer: Prof. M. Livne, Faculty of Structural Engineering, Technion – Israel Institute of Technology, Haifa

 

Academic Appointments

 

2014-2015 ORT Braude College, Karmiel, Israel.

Nomination within Mechanical Engineering:

–       A member of the ABET (“the Accreditation Board for Engineering and Technology”) Department work team.

–          A member of the EFQM (European foundation for quality management) Department work team.

2013-present ORT Braude College, Karmiel, Israel.

Nomination within Mechanical Engineering:

–       Consultant of the junior students of Mechanical Engineering

2011-2017 ORT Braude College, Karmiel, Israel. Senior

Nomination within Mechanical Engineering:

–       Supervisor of Strength and Materials Laboratory

2010-present ORT Braude College, Karmiel, Israel.

Nomination within Mechanical Engineering:

–       Consultant of the IDF students of direct B.Sc. degree Mechanical Engineering

–       A member of the committee dealing with the interrelations between the college and the IDF.

2010-2014 ORT Braude College, Karmiel, Israel.

Nomination within Mechanical Engineering: A member of the college Quality Management committee

2008-present ORT Braude College, Karmiel, Israel.

Nomination within Mechanical Engineering:

–       Head of Design and Manufacturing studies.

–       Supervisor of Machine Design Element Project

2008-2013 ORT Braude College, Karmiel, Israel.

Nomination within Mechanical Engineering:

–       A member of the college teaching committee

2008-2009 ORT Braude College, Karmiel, Israel.

Nomination within Prof. Yohanan Arzi President, ORT Braude College:

–        A member of the college committee for improvement of Students Tutoring.

2005-2009 ORT Braude College, Karmiel, Israel.

Nomination within Mechanical Engineering:

–       A member of the faculty admission committee.

2003-2008 ORT Braude College, Karmiel, Israel.

Nomination within Mechanical Engineering:

–       Consultant for the junior students of Mechanical Engineering

–       Supervisor of Machine Design Element Project

2003-2005 ORT Braude College, Karmiel, Israel.

Nomination within Mechanical Engineering:

–       Chairman of the CIM Development committee.

1991-2001 Nazareth Illit College, Israel.

–       Head of Mechanical Engineering department and lecturer of Mechanical Engineering

1988-1991   Technion – Institute of Technology, Haifa, Israel, and Faculty of Mechanical Engineering.

–         Teaching Assistant

1999-present Ort Braude College, Israel.

Mechanical Engineering Department

Undergraduate Courses:

–       Introduction to Machine Design

–       Machine Design elements

–       Machine Design Element Project

–       Robotics

–       Machining processes of Metals

–       Engineering mechanics of solids

–       Computer Integrated Design and Manufacturing Systems

–       Strength and Materials Laboratory

2014- present Jerusalem College of Engineering – Azrieli, Israel.

Lecturer in Mechanical Engineering Department

Undergraduate Courses:

–       Introduction to Machine Design.

–       Machine Design elements

–       Principles and analysis of machining manufacturing technologies

1999- 2015 ORT Braude College, Karmiel, Israel.
Industrial Management Engineering DepartmentUndergraduate Courses:-       Materials and Mechanical Manufacturing Processes 
1999-2007 Ort Braude College, Israel.

Industrial Management Engineering Department

Undergraduate Courses:

–        Computer Integrated Design and Manufacturing Systems

2003-2004 Ort Braude College, Israel.

Electrical Engineering Department

Undergraduate Courses:

–       Introduction to Robotics

1991-2001 Nazareth Illit College, Israel.

Mechanical Engineering Department

Pre-Academic Courses:

–       Statics

–       Materials science for engineering

–       Strength of materials

–       Machine design

–       Supervisor of Machine Design Element Project

Development of laboratories:

–       Set-up and Teaching of strength of materials Lab

 

 

1993-present: Freelancer consultant. Computerized and analytical structure and strength analysis with the aid of finite element model software (ANSYS). A partial list of projects carried out during this period is attached.
1999 Consulting: Development of teaching program for undergraduate Courses in Statics, Dynamics and Fluid mechanics.

Customer: Ministry of Work, Israel.

1999 Consulting: Thermal analysis for an antenna unit.

Customer: Celletra, Yoqne’am Israel. May 1999.

1995 Final report on program that carries out transformation on data files containing elevation points of whole Israel. The purpose of the program is to create files of 1degree * 1degree with a grid, by carrying out interpolation to calculate the required point whilst knowing 4 points in that surrounding area.

Customer: Qualcomm Israel, Haifa

1993 Consulting: The behavior of stress intensity factor K1 in ceramic square plate with a central hole with a variable length crack caused by a unidirectional compression load.

Customer: Prof. E. Altus, and J. Tirosh, Faculty of Mechanical Engineering, Technion – Israel Institute of Technology, Haifa Israel. May 1993.

1992 Consulting: The behavior of stress intensity factor K1 on a channel beam with a variable length crack caused by a unidirectional compression load.

Customer: Prof. J. Tirosh, Faculty of Mechanical Engineering, Technion – Israel Institute of Technology, Haifa Israel. April 1992.

1992 Consulting: Analysis of stiffness and strength of composite material plates under bending load.

Customer: Prof. E. Altus, Faculty of Mechanical Engineering, Technion – Israel Institute of Technology, Haifa Israel. Feb 1992.

1991 Consulting: Effect of a soft layer on the stress intensity factor K1 of a transverse crack caused by a vertical compression load.

Customer: Prof. M. Livne, Faculty of Structural Engineering, Technion – Israel Institute of Technology, Haifa Israel. Sep 1991.

1982-1988: Structural strength engineering, encompassing analysis, modeling and testing of the Canard (small wing) and elements of the wing, in the framework of the IAI Lavi Combat Aircraft project. These structures are composed of metal and composite material structural elements. Stiffness, strength, manufacturing processes, weight, and price were analyzed for optimization using both analytical and numerical Methods. A finite element model (FEM) of the entire Canard was constructed by using NASTRAN software package. Within that I also took part in planning and testing canard and wing prototypes.

Supervised two undergraduate students, ORT Braude College, Department of Mechanical Engineering, Israel, 2015-2016

Supervised one undergraduate student, ORT Braude College, Department of Mechanical Engineering, Israel, 2017-2018

2017 Jerusalem College of Engineering – Azrieli:

An annual Excellence Certificate and Award for the year 2017

 

2017 Ort Braude College:

An annual Excellence Certificate and Award for the year 2016 based on survey and performance reports, which monitor all year-long teaching, and service achievements and efforts.

2016 Ort Braude College:

An annual Excellence Certificate and Award for the year 2015 based on survey and performance reports, which monitor all year-long teaching, and service achievements and efforts.

2014 Ort Braude College:

An annual Excellence Certificate and Award for the year 2013 based on survey and performance reports, which monitor all year-long teaching, and service achievements and efforts.

2013 Ort Braude College:

An annual Excellence Certificate and Award for the year 2012 based on survey and performance reports, which monitor all year-long teaching, and service achievements and efforts.

2013 Ort Braude College:

Second award for the best proposal for efficiency in Quality Management.

2013 Ort Braude College:

Award for representing the college in long distance running races.

2012 Ort Braude College:

An annual Excellence Certificate and Award for the year 2011 based on survey and performance reports, which monitor all year-long teaching, and service achievements and efforts.

2012 Ort Braude College: Award for the best proposal for efficiency in Quality Management.
2008 Ort Braude College:

An annual Excellence Certificate and Award for the year 2007 based on survey and performance reports, which monitor all year-long teaching, and service achievements and efforts.

2006 Ort Braude College:

An annual Excellence Certificate and Award for the year 2005 based on survey and performance reports, which monitor all year-long teaching, and service achievements and efforts.

2006 Ort Braude College:

Letter of distinction from the head of Industrial Management department, for completion the development and Upgrading the Computer Integrated Manufacturing (CIM) Lab.

1995, 1996, 1997 Nazareth Illit College:

3 Excellency awards for the improvement of the Mechanical and Air-Conditioning Department.

1983, 1986 Israel Aircraft Industry (IAI):

2 Excellency awards for working out technical solution leading to weight reduction of components on the Canard (small wing) of the Lavi Combat Aircraft project.

 

 

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