Design of a biomass scale cubical triaxial tester

Christopher J. Lanning, Hojae Yi, James H. Dooley, Virendra Puri, Jordan M. Whitt

Research output: Contribution to conferencePaperpeer-review

2 Scopus citations


The bioenergy industry is dependent on predictable and reliable feedstock handling equipment. High profile failures in the industry demonstrate the need for better modeling tools for feedstock handling, specifically tools which can model the bulk flow of biomass feedstock materials in handling equipment such as hoppers or screw conveyors. Measurement of bulk material flow characteristics is a critical component to inform modeling tools. Following examples in the soils and pharmaceuticals industries, a Cubical Triaxial Tester (CTT) was selected as a critical component to study relationships between applied stress on a bulk sample and the resulting strain on the bulk material. In cooperation with The Pennsylvania State University, Forest Concepts designed a CTT specifically to measure bulk biomass flowability characteristics. Several mechanical design constraints were identified to ensure proper scaling and repeatability. Major design constraints included sample chamber size versus particle length, volumetric strain sensing accuracy, independent axial pressure control, and sample chamber handling. This report explains how major design constraints were determined.

Original languageEnglish (US)
StatePublished - 2020
Event2020 ASABE Annual International Meeting - Virtual, Online
Duration: Jul 13 2020Jul 15 2020


Conference2020 ASABE Annual International Meeting
CityVirtual, Online

All Science Journal Classification (ASJC) codes

  • Agronomy and Crop Science
  • Bioengineering


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