Phase II: Testing & Results
William Yanko, PhD, PE
To study the effects of water on wood-based composite cabinetry (particleboard), U. S. Forensic engineers, under the direction of William Yanko, PhD, PE, conducted an intricate experimental test program. Visit USF Research: Phase I to learn about the initial stages of the study.
Testing Program
The testing program had a cycle time of 70 total days. The flow rates were calibrated to 15-25 drips per minute. Observations were continuous and the data collection was based on scheduled intervals.
Observation Schedule
Water delivery onto the cabinet shelf
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Test Program Observations: Day 2
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- Discoloration of back panel
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- Distortion of veneer materials
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- No corrosion on door hinges
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- Swelling of kick plate and vertical panels
Test Program Observations: Day 7
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- Significant swelling; no material “break apart”
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- No visible mold growth beneath the cabinet
Test Program Observations: Day 14
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- Visible mold growth beneath the cabinet
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- Visible mold growth on the drywall
Test Program Observations: Day 21
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- Vertical deflection of shelf (3/16”) and veneer loss (for cabinet filled with 1” of water; none otherwise)
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- No break-apart of particleboard
Test Program Observations: Day 63
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- Vertical deflection of shelf (2.25”) and veneer loss (for cabinet filled with 1” of water; none otherwise)
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- Significant mold growth underneath
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- Mold growth in adjacent cabinets
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- Mold growth on wall behind the cabinets
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- No corrosion of door hinges
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- No break-apart of particleboard
General Observations
- Swelling of particleboard after 1 day
- Fungal growth under cabinets at 14 days
- Bowing (3/16”) of cabinet shelf at 21 days (for cabinet filled with 1” of water; none otherwise)
- Minor corrosion of fasteners at 70 days
- No corrosion of door hinges at 70 days
Testing Program Summary
