The Jenike Shear Tester is the most widely accepted instrument for measuring the meaningful flow properties of powders and bulk solids. Participants in the testing course will gain hands-on training to learn testing procedures and techniques following The American Society for Testing and Materials (ASTM) Standard D6128. This course is normally taught by one of our full time laboratory technicians, or a project engineer if conducted at your facility.

The optional second day portion of the course expands on what is learned the first day. Instruction is provided on how to turn raw data obtained during a Jenike (direct) shear test and friction test into design specifications for a storage vessel. The Jenike shear cell is recognized as the preferred testing method for generating minimum outlet dimensions to prevent cohesive arching and ratholing, and critical hopper angles to provide mass flow. The second day of the course is taught by one of our project engineers.

Technicians responsible for actually using the test equipment will benefit most from the first day, hands-on testing portion of the course. Engineers responsible for converting the raw test data to solids handling equipment design parameters will benefit most from the optional second day, data analysis portion of the course.

• First Day—Testing
  • Test equipment and setup
  • Shear testing to determine cohesive strength
    • Small and large cell
    • Continuous flow
    • Time shear tests
  • Wall friction tests
    • Continuous flow
    • Time adhesion tests
  • Compressibility test (bulk density)
  • Plotting flow properties test results
• Second Day (optional)—Data Analysis
  • Introduction
    • Flow problems
    • Flow patterns
  • What is material strength?
    • Turning shear test data into critical outlet dimensions
  • Wall friction tests
    • Wall friction angles
    • Turning wall friction data into mass flow hopper angles
  • Compressibility tests and using bulk density data for bin design
  • Design example using test results

This course is offered either at our office in Tyngsboro, Massachusetts or at your plant, if you have the test equipment available. To maximize interaction, participation for the testing course is limited to two people. Up to four people may attend the data analysis course.

Courses can usually be scheduled for a mutually convenient date with two weeks advance notice. Participants are encouraged to provide a sample of one of their non-hazardous materials for testing. Personnel attending should first read the testing instruction manual and be thoroughly familiar with Bulletin 123, "Storage and Flow of Solids," Chapters I and II.

To schedule or obtain pricing for this in-house course, please contact Eric Maynard, senior project engineer/education coordinator, at (978) 649-3300 or courses08@jenike.com.