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Dipl.-Ing. Peter Mäckel is scientific employee at the institute for machine components and design, working at the Laboratory for Photoelasticity, Holography and Shearography of the University of Kassel, Department of Mechanical engineering. He studied Machanical engineering at University of Hannover with a broad scope from Mechanics and Fluid Mechanics, Design and Measurment Technique to Turbo-Machines and prepeared is final thesis on Striling machine thermodynamic under supervision of Dr. A.J. Organ at the Engineering Department of Cambridge University.

Time
04/96 – cont.	University of Kassel, Department of Mechanical engineering, scientific employee at the Institute for Machine Components and Design working at the Laboratory for Photoelasticity, Holography and Shearography (L-SHS).
	Research and PhD-thesis
97 – cont.	Topic of PhD-thesis (in preparation) is digital shearography. This contains system development and practical applications in electronic speckle pattern shearing interferometry for measuring geometrical, mechanical and thermodynamic quantities. This field of research requires a comprehensive theoretical and practical knowledge in measurement techniques such as image acquisition, image computing as well as optical- and mechanical engineering. The conversion into praxis and its application needs experience in precision design including piezo-mechanics and laser application, modern software technology and experimental techniques. A crucial point of this work was the development of experimental three dimensional strain, stress and vibration analysis applied on curved surfaces including new methods for transient measurement techniques. Patent applications have been written in conjunction with the laboratory colleagues.
	Development of the Shearwin Software under Windows NT
98 - cont.	The software Shearwin NT is one of the keys for the successful application of digital interferometry developed by the L-SHS. The development of the program Shearwin (still under Windows 3.11) has been taken over starting a fundamentally new concept under Windows NT. This means co-ordinating and leading a varying team of up to five student workers simultaneously over the last years.
	*Industry related projects:*
99 – 00	Measurement champagne with Kayser-Threde GmbH on aerospace material.
99	Precision measurement with holography on thermal expansions of sensors for Mahr GmbH, Göttingen.
98 - 99	Measurement, analysis and interpretation on mechanical components of a household washing machine drive (Bosch-Siemens-Hausgeräte).
98	Microscopic strain analysis on electronic components for validation of a FEM simulation in cooperation with Institute for mechanics of Kassel University and Bosch Telecom GmbH.
97 - 99	Contributions have been made to the Brite-Euram project ADPRIMAS on aerospace primary structures and new materials by shearographic strain and vibration analysis and for British Aerospace.
96 - 97	A new application of non destructive testing by shearography on wind turbine blade was introduced, and tested with Enercon GmbH.
	Research and applied work related to Stirling cycle machines:
02/98	Invited paper on thermodynamics of the Stirling gas circuit, presented during the European Stirling Forum ´98.
96 - 00	Experimental technique and apparatus has been developed for the determination of thermal shorting of porous media in vacuum. The reports on the work has been the first on this crucial aspect of regenerator thermal performance. The investigation was begun as part of my diploma at Cambridge University and continued at Kassel.
	Lectures / teaching / university duties
04/96–cont.	Supervision and preparation of practical guided design projects in machine components and mechanical design. Lecturing and exercises on machine component computation. Preparation of exams and marking.
	Supervision of seven final theses (Diplomarbeiten) and several project works of students related to speckle interferometry, mechanical design and Stirling thermodynamics
98 – cont.	Beside the service of the imk/lshs hompages, a Internet supported design exercise has been written and used since summer term ‘99 (actual topic: Stirling engine, mechanical design). The topics are adapted to the teaching subject and focus on mechanical design, stress analysis and computing of machine components
96 - 98	Three research proposals have been written.
10/95-3/96	Working at the family company (workshop for wood ledges / sheets)

Education
05/95-09/95	University of Cambridge, Department of Engineering and University of Hannover, ‘Institut für Strömungsmaschinen’ Final thesis: Analysis and design of a Stirling cycle refrigerator. Supervisor: Dr. A. J. Organ, Cambridge, Prof. W. Rieß, Hannover The final thesis is divided into a theoretical and experimental part: Laws of similarity as well as simulation were applied to improve the insight into the Stirling-cooler thermodynamics. On this basis a experimental Stirling cycle cooler was designed and constructed. The experimental part aims to determine ‘connectivity’ of the regenerator matrix. Two publications jointly with Dr. Organ resulted, one on each topic.
04/95	Final exams, part II, University of Hannover ( Measurment Technique to Turbo-Machines)
07/94-11/94	University of Cambridge, Department of Engineering Supervisor: Dr. A. J. Organ Project work: First principles of Stirling gascircuit computing and analysis were achieved by working on a design study for a simple and small Stirling model aircraft propulsion.
04/94	Final exams, part I, University of Hannover ( Mechanics and Fluid Mechanics, Design)
06/93-08/93	Work experience at Jenbacher Energy AG, Jenbach, Austria: I was involved in the test and development of a reciprocating internal combustion gas engine.
05/93-06/93	Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR-Göttingen) Supervisor: Prof. Dr. G. A. E. Meier (Dr.-Phys. Lose) Experimental: Measuring fluid velocities and turbulence frequencies behind a half tear-drop in a wind tunnel. The turbulences were influenced by pressure waves.
04/93	Compulsory exams, University of Hannover
02/92-05/94	University Hannover, Institute for Machine Elements and Design Supervisor: Prof. Dr.-Ing. E. Paland (Dr.-Ing. Faust) Project-work: I developed and constructed a high precision turning moment measurement system for electric machines supported with aerostatic bearings. The objective was to measure moments and revolutions at pendulum electric engine and generator with a deviation of less than 0.5% to compute efficiency of continuous variable transmissions
10/89-10/91	University of Hannover, ‘Vordiplom’
10/88-10/89	National service: food analysis laboratory of ‘Bundeswehr’
07/88-10/88	Travelling: Canada, USA, Australia, New Zealand
08/81-05/88	St. Ursula-Gymnasium, Hannover, Germany: ‘Abitur’
Reference	Dr. A. J. Organ University of Cambridge, Engineering Department Trumpington Street, Cambridge CB2 1PZ, UK Dr. Organ is author of the book The Regenerator and the Stirling engine published in 1997 (MEP, London). The book Thermodynamic and Gas Dynamics of the Stirling Cycle Machine was published in 1992 by Cambridge University Press. Of 64 technical papers since 1962, 38 deal with Stirling cycle machines and/or regenerator. Twenty-four have been published by the Institution of Mechanical Engineers.
practical studies	Jenbacher Energiesysteme (see education 06/ 93-08/93). LPKF CAD/CAM-Systems GmbH, Hannover, 1993 Three weeks' course at Deutscher Verband für Schweißtechnik in welding. Class DVS-E1, three weeks, 1988 A two weeks' course in basic machining and a one weeks' course in aluminium machining including brazing and welding at Handwerks-kammer Hannover, 1988 Barke Maschinenbau, Hannover, 6 weeks, 1988: Basic machining
Computer	Operating systems: Windows NT, UNIX/Linux, DOS Programming: Pascal, FORTRAN (C , Matlab) Software packages: Math-CAD, Latex, Word, CAD-systems
Publications (Selection)	Speckle Interferometrie Stirling Maschinen

Peter Mäckel Dipl.-Ing.
Tel.: 0561 / 804-2722 (-3415) Fax: 0561 / 804-7723	Universität Gh Kassel Fachbereich 15 - Maschinenbau Labor für Spannungsoptik, Holografie und Shearografie Mönchebergstr. 7 34109 Kassel
e-mail: maeckel@uni-kassel.de