DESIGN OF A TESTING MACHINE FOR MICRO-DEVICES Follow up to Clément Gabry’s master thesis on Structural Resistance of Silicon Membranes 1 12/10/2014CERN.

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Presentation transcript:

DESIGN OF A TESTING MACHINE FOR MICRO-DEVICES Follow up to Clément Gabry’s master thesis on Structural Resistance of Silicon Membranes 1 12/10/2014CERN PH-DT-EO

What have I done so far? Read and studied Clement’s thesis Gathered informations on the types of machines Identified the main objectives and requirements Met the team and observed how it works Started learning Ansys 2 12/10/2014CERN PH-DT-EO

Main requirements identified I – General Geometry II - Alignment III – Measurement Devices IV - Flexibility V – Accessories VI - Cost 3 12/10/2014CERN PH-DT-EO

I - General Geometry HorizontalVertical Small sizeMore voluminous CheapLess cheap Orientation 4 12/10/2014CERN PH-DT-EO

I – General Geometry « blocks » rather than thin arms Small design, compact Material Ansys static analysis Stiffness 5 12/10/2014CERN PH-DT-EO

II - Alignement Linear Actuator Double Rails Bolts Linear stage ? 6 12/10/2014CERN PH-DT-EO

II - Alignment Symmetry of the 3 points One block for the support? Simple and similar geometry 7 12/10/2014CERN PH-DT-EO

II - Alignment Sample Little stops on the 2 points Positioning symmetric device 8 12/10/2014CERN PH-DT-EO

II - Alignment Flatness Flat table with threaded holes, very precise Important to avoid shear 9 12/10/2014CERN PH-DT-EO

III – Measurement Devices Load Cells S-type Beam type « Donut » type Button 10 12/10/2014CERN PH-DT-EO

III – Measurement devices Load Cells : Specifications Capacity ( ∼ N) Fixture system Reading system (loop) 11 12/10/2014CERN PH-DT-EO

III – Measurement devices Displacement sensor Linear stage + simple sensor Linear actuator Data? 12/10/2014CERN PH-DT-EO 12

IV - Flexibility Removable measurement devices « Simple blocks », easy to change Adaptable vertical & horizontal table ? Window in table for observation 13 12/10/2014CERN PH-DT-EO

V - Accessories Microscope, camera Lights Environmental chamber 14 12/10/2014CERN PH-DT-EO

VI - Cost To buy Load Cell(s) Actuator(s) Table ? Accessories Machining Cost of the material Machining 15 12/10/2014CERN PH-DT-EO

Short-term objectives Determine specifications for load cells & actuators Get quotes and choose models Continue to think about general design & options to add 16 12/10/2014CERN PH-DT-EO