Test Number Six - Preparation Sheet

The Objectives for this Test are

• That you understand how processing effects microstructure (and changes to microstructure); this includes both heating and cooling from the melt.
• That you qualitatively understand how microstructure affects mechanical properties such as strength and hardness.
• That you understand that it is processing which changes structure which in turn determines properties.
• That you understand two different materials can have identical chemical composition.
• That you understand elastic loading and brittle fracture.

The Expected Outcomes for you to Show you can meet these Objectives are

• You need to be able to clearly distinguish how cooling from the melt is different than heating from room temperature.
• You need to be able to clearly describe why certain structures form as a result of processing.
• You need to be able to qualitatively rank the mechanical properties of materials based on structure.
• You need to know the differences between processes (terminology) given the definitions on the test information sheets
• You need to know the fundamental definitions of stress and strain.
• You need to be able to work with base units.
• You need to be able determine the values of key mechanical properties (modulus and fracture toughness) from experimental data.
• You need to be able to analyze 4-point bend test data.
• You need to be able to use the key mechanical properties to make design decisions.
• You need to be able to apply what you learned in different contexts. This is especially true for elastic behavior and brittle fracture.
• Proficiency in algebra and clear problem solving will be key.

Some Tips for Studying for Tests

• Prepare Review Sheets based on all relevant course materials for each topic.
• Try extra problems or questions (even if you have to make them up)
• Review the Homework Solutions and Assess your Performance on the HW. An assessment includes strengths, areas for improvement and insights. The assessment is a point from which to move forward. The strengths should represent an honest review. The areas for improvement, should include what you will do to improve, insights are (AHA moments) something you suddenly learned.
• Do not rely solely on the HW Solutions to study.
• Studying is Active not Passive.
• Studying is Not Looking at Subject Matter for the First Time.
• Remember that simple observation, which includes saying the "equation says so" is not adequate.
• It is unlikely that the test will be exactly like the HW problems.
• You need to be able to apply what you have learned in new contexts.
• Do not formula grab.

Test 6 Practice Problems/Questions (Please note the disclaimer still applies)

4 Pt-Bend and KIC Excel Problem Generator