Fatigue testing machine
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Fatigue testing machine. Fatigue Group :- Abed Al Sala m Hammouz Ahmad Abaza Ala ’ Mustafa Mohammad Bahish. Supervised by :- Dr. Ahmad Al Ramahi. Outline . Part one Review. Design stage. Manufacturing and Assembly Testing and documentation Cost analysis and further work.

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Fatigue testing machine

Fatigue testing machine

Fatigue Group :-

Abed Al Salam Hammouz

Ahmad Abaza

Ala’ Mustafa

Mohammad Bahish

Supervised by :-

Dr. Ahmad Al Ramahi


Outline

Outline

  • Part one Review.

  • Design stage.

  • Manufacturing and Assembly

  • Testing and documentation

  • Cost analysis and further work


Part one review

Part One Review

  • Literature review about fatigue

  • Preliminary design


Preliminary design specimens

Preliminary Design - Specimens

  • Four point clamping test specimen .

  • Three point clamping test specimen .


Preliminary design life estimation

Preliminary Design – Life Estimation

Stress based approach :


Project stages

Project Stages


Design stage

Design stage

  • Machine Functions and Layout.

  • Design Calculation.


Machine functions and layout

Machine Functions and Layout


Rotating bending test

Rotating bending test

  • Put the specimen under pure bending moment


Rotating bending test1

Rotating bending test

F/2

F/2

Forcing method using dead weights.


Rotating bending

Rotating Bending


Rotating bending1

Rotating Bending


Cantilever

Cantilever


Cantilever1

Cantilever


Manufacturing and assembly

Manufacturing and Assembly

Used Manufacturing processes

Turning

Welding

Milling


Video

video


Manufacturing challenge

Manufacturing Challenge


Machine features

Machine Features

  • Ease of use.


Machine features1

Machine Features

  • It has a good flexibility.


Electrical circuit

Electrical Circuit

  • Ease of operate machine.

  • Control the time of experiment .

  • Give accurate results for number of cycles to failure .

  • Support safety for both user and machine .


Electrical circuit1

Electrical Circuit


Electrical circuit2

Electrical Circuit

Safety mode

  • The motor does not work until:

  • The main switch is ON.

  • Emergency switch and (ON/OFF switch) are ON.

  • Cover of the motor is completely closed.


Electrical circuit3

Electrical Circuit

Accuracy in reading results

  • To get the accuracy in results.

  • The normally open limit switches are ON.

  • The normally closed limit switches are ON.

  • Then sensor feeds signals.


Electrical circuit4

Electrical Circuit

  • Open limit switches are ON means the cover of the motor is closed, the house is not aligned, does not happen any failure in the specimen.

  • Closed limit switches are ON means, the contactor start connecting, and there is a load affecting on the specimen.


Electrical circuit5

Electrical Circuit

  • When start getting signals from the sensor,

  • counter counting until the specimen fails,then:-

  • The motor stop rotating,

  • Sensor stop feeding with signals,

  • And the counter holds the values on.


Cost analysis and similar machines

Cost analysis and similar machines


Specimen forming

Specimen Forming


Specimen forming1

Specimen Forming

  • video


Polishing

Polishing


Testing and documentation

Testing and Documentation

  • Testing operation


Testing and documentation1

Testing and Documentation


Thanks

Thanks


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