Yitzchak Yifrach

Yitzchak Yifrach

Yitzchak Yifrach

מחלקה: Mechanical Engineering
תפקיד נוכחי: Senior Teacher, head of design and manufacturing studies

ACADEMIC DEGREES :

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. 1. Prediction forces and temperature in milling processing processes by using finite element method and experiments.
  • 2. 2. Cutting dynamic force modeling of end milling operation
  • 3. 3. Mechanical design of machine elements
  • 4. 4. Mechanical design of machine elements
  • 5. 5. 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

שם הקובץ
תאריך
סוג
CV_Yitzchak yifrach_November_2022
03/11/2022

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

Prediction Temperature and heat partition on tool-workpiece interface during slot milling of SAE1020 by using a experiments and finite elements simulations.

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 slot (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

June 2022

 

Participation in the Erasmus Conference from 30 May to 3 June at the University of Leoben, Austria. During the conference I gave two seminars to Prof. Paul O’Leary (Chair of Automation University of Leoben) and his team in the following topics:

1.      Prediction of cutting forces and temperatures in dry end milling operation in low carbon steel (SAE 1020) by experiments and modeling

2.      Prediction temperatures in dry end milling operation dry end milling operation in low carbon steel (SAE 1020) by experiments and modeling

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 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

 

 

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.

2013-2019

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

2010-2019

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

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.

2013-2019

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

2010-2019  
   
   
   
   
   
   
   
   
   

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

–       Kinematics of mechanical mechanisms

1999- 2015

ORT Braude College, Karmiel, Israel.
 Industrial Management Engineering Department

Undergraduate 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 

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 (Omer Levy, & Elad Yehuda)
  • Supervised one undergraduate student, ORT Braude College, Department of Mechanical Engineering, Israel, 2016-2017 (Mor Elgarisi)
  • Supervised one undergraduate student, ORT Braude College, Department of Mechanical Engineering, Israel, 2017-2018 (Ido Salem)
  • Supervised one undergraduate student, ORT Braude College, Department of Mechanical Engineering, Israel, 2018-2019 (Kobi Ben Dahan)
  • Supervised one undergraduate student, ORT Braude College, Department of Mechanical Engineering, Israel, 2018-2019 (Liel Shema)
  • Supervised one undergraduate student, ORT Braude College, Department of Mechanical Engineering, Israel, 2018-2019 (Erez Dahan)
  • Supervised one undergraduate student, ORT Braude College, Department of Mechanical Engineering, Israel, 2021-2022 (Yahav Alon)
  • Supervised one undergraduate student, ORT Braude College, Department of Mechanical Engineering, Israel, 2021-2022 (Or Books )
  • Supervised one undergraduate student, ORT Braude College, Department of Mechanical Engineering, Israel, 2022 (Gal Peretz )

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.

ייעוץ לימודים