Tensile Testing Fundamentals

Lab Reports Summary

• Various lab reports were submitted by students in a mechanics of materials lab course.
• The reports covered topics like ultimate tensile testing, beam deflection, and stress-strain curves from different specimens, including mild steel.
• Different materials like mild steel and brass were tested in the analysis.
• Students calculated parameters like force, extension, deflection, and stress.
• The data was analyzed to understand mechanical properties of each material.
• Graphs show the relationship between different factors, like force and deflection.
• Students compared the theoretical and experimental results.
• The reports describe procedures, calculations, and discussion on the findings.

Student Submissions

• Specific students submitted reports on various experiments covering material testing.
• Student names, TRN numbers, and CMS IDs were included.
• Each report had details about specific materials, parameters, and calculations.
• The data includes force values, extensions, and deflections related to different loads on each material.

Apparatus and Procedures

• Different apparatuses like universal testing machines (UTMs), beam deflection apparatus and torsion bar apparatus were used.
• Specific procedures were followed when conducting experimental tests.
• Measurements of variables like deflection and dimensions of specimens were taken with measuring devices like Vernier calipers and dial gauges.
• The correct parameters were measured and recorded.

Calculations and Observations

• Each report included calculations for stress, strain, strength, and modulus using various equations.
• Experimental data was collected, tabulated, and analyzed.
• Results of the experiments were compared to expected/theoretical values, showing differences between them.
• A statistical analysis showing discrepancies and possible error was included.

Materials and Specimen Characteristics

• Various material tests were performed using either mild steel, brass, and their variations.
• Each specimen's physical dimensions were recorded (e.g., thickness, width, length).