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General

Errors in Your Data (1454-220A1)


Description

The eLearning Errors in Your Data Course uses an online based diagnostic approach focused on helping operators of material testing systems understand any data integrity issues they may come across during their testing. This course is intended for both new and experienced operators, including lab technicians, engineers, and anyone performing material testing. Topics include errors caused by: Physical measurements (load cells/extensometers), Testing fixtures, Misalignment (specimen and system), Incorrect applications, Software method development, Temperature and humidity, Poor machine testing control, Agents external to the testing system (vibration), Common operator missteps. Other topics covered include: Proper interpretation of testing standards (ASTM/ISO), Unexpected frame movement, Prevention of errors before they happen, System preventative maintenance. After completing this course, the operator will be familiar with common errors seen in materials testing. They will also be familiar with the potential causes for such errors and how to approach resolving them in a timely manner.

Content
  • Introduction
  • Chapter 1: Physical Measurements and Fixtures
  • Load or Stress Data
  • Stress lower or higher than expected
  • Load Cell Compromised
  • Max Stress and Strain Data
  • Specimens Failing
  • Slippage or Grip Face Failure
  • Gripping, inadequate, slippage causing specimen damage
  • Data Plateau & Poor Modulus
  • Strain Data inconsistent or unreliable
  • Strain at Break is not correct
  • Inconsistent Strain Data with Extensometer
  • Strain Data Show Dips or Negative Direction
  • Unexpected Frame Movement
  • Chapter 2: Test Method Setup and Environmental Considerations
  • Chapter 2 Introduction
  • Test Result Comparison
  • Test Results do not Match
  • Bad Stress Values
  • Maximum Data, Values are Wrong
  • Data Graph is not Smooth
  • Wrong Data from a Physical Measurement
  • Noisy Graph Plot or Machine Vibration
  • Poor Data After Linear Region
  • Noisy Data at Low Loads
  • Bad Load and Elongation Data when Testing at Temperature
  • Degradation of Data Over Time, Part Failures and Increasing Downtime
  • Conclusion
Completion rules
  • All units must be completed
  • Leads to a certificate with a duration: 3 months
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