Determination Material Properties and Fracture Parameters of Triangular holed Aluminium Samples
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The project focuses on determining the material properties and fracture parameters of aluminum samples with triangular holes. It involves uniaxial testing and photoelastic testing of various specimens to analyze the effects of hole geometry on strength and failure. Key objectives include finding the minimum distance between holes to prevent failure and obtaining properties such as Young's modulus and yield strength.
Determination Material Properties and Fracture Parameters of Triangular holed Aluminium Samples
- 1. Determination Material Properties and Fracture Parameters of Triangular holed Aluminium Samples
- 2. Structural Lab Project Presentation PushpalMazumder 10CE31001 JagmohanSaikia 10CE31002 Devarsh Bhonde 10CE31003 Pankaj Menawat 10CE31004 AshviniKumar 10CE31005 ManpreetChaudhary 10CE31006
- 4. Problem Definition To determine material properties and fracture parameters of aluminiumsamples: To obtain material properties of plane aluminium sample To determine fracture parameters and failure regions of single triangular hole aluminium plate Find minimum distance between two symmetrical triangular holes to ensure no failure occurs between the two holes inABAQUS To determine fracture parameters and failure regions of double triangular holed aluminium plate employing the minimum distance between the holes
- 6. Methodology and Analysis Rectangular specimen of aluminium 300mm x 50mm x 5mm Three different specimens are used to determine the physical properties and fracture parameters: Plane aluminium plate Aluminium plate with an inclined triangular hole at center with geometry Aluminium plate with two inclined triangular hole at variable distance to study failure effects. Aluminium Plate with single triangular hole Aluminium Plate with double triangular hole
- 7. UTM Testing
- 8. UTM Testing Uniaxial testing was performed over aluminiumsample of size 300 mm x 50 mm x 5mm in Universal Testing Machine (60T) in order to determine the material properties such as: Young's modulus, Poisson's ratio and yield strength
- 9. UTM Testing
- 10. UTM Testing Stress-strain plot for base model without any hole
- 11. UTM Testing Stress-strain plot for base model with single hole
- 12. UTM Testing
- 13. UTM Testing Stress-strain plot for base model double holes
- 15. Photoelastic Testing The model is used for calibration i.e. to obtain the stress-optic coefficient. Single point and double point loadings are used to determine this coefficient. The required parameter is obtained using the following equation: Nf/h=(σ1-σ2) h : thickness of specimen N : number of fringes C : stress-optic coefficient σ1 and σ2 : the first two principal stresses
- 16. Photoelastic testing for model with no hole Single loading
- 17. Photoelastic testing for model with no hole N Force (N) 휎1 휎2 h f 3 188 0 -0.5013 2.5 0.41777778 5 288 0 -0.768 2.5 0.384 f average -0.40088889
- 18. Photoelastic testing for model with single hole Fringes developed in the model with single hole at a load of 120 N Fringes developed in the model with single hole at a load of 380 N
- 19. Photoelastic testing for model with single hole Fringes developed in the model with single hole at a load of 550 N Fringes developed in the model with single hole at a load of 710N
- 20. Photoelastic testing for model with single hole Fringes developed in the model with single hole at a load of 1095 N Input force h width Area of cross-section Ϭ1(applied) Ϭ3 f N Ϭobtained SC factor 120 2.6 25 65 1.846153846 0 7.007 1 2.695 1.459792 380 2.6 25 65 5.846153846 0 7.007 3 8.085 1.382961 550 2.6 25 65 8.461538462 0 7.007 4 10.78 1.274 710 2.6 25 65 10.92307692 0 7.007 5 13.475 1.233627 1095 2.6 25 65 16.84615385 0 7.007 7 18.865 1.11984