Comparing Thermal Conductivity Methods
| Compare Method |
Modified Transient Plane Source |
Transient Line Source |
Transient Plane Source |
Guarded Hot Plate / Heat Flow Meter |
Laser Flash Diffusivity |
|---|---|---|---|---|---|
SPEED & FLEXIBILITY |
|||||
| Sample Preparation | None Required | None Required | Some | Extensive | Extensive |
| Testing Time | Seconds | Minutes | Minutes | Hours | Hours |
| Training Time | Minimal | Minimal | Significant | Moderate | Moderate |
| Non-Destructive | Yes | Yes | No | No | No |
| Method Development | |||||
| ASTM/ISO Standards | ASTM D7984, WK50791, WK43689 | ASTM D5334, D5930, IEEE442 |
ISO-22007-2, GB/T 32064 |
ASTM C518, C177 | ASTM E1461, E2585 |
RANGE |
|||||
| k-Range (W/mK) | 0 – 500 | 0.1 – 6 | 0 – 100 (100 – 500 requires Cρ) | 0 – 2 | 0 – 500 (requires density & Cρ) |
SAMPLE CONFIGURATION |
|||||
| Minimum | 0 – 500 | 80 ml | Two Identical Samples | 6” x 6” (150 x 150mm) | 0.5” diameter (12.4mm) 0.004” thick (1mm) |
| Maximum | Unlimited (17mm) | Unlimited | Two Identical Samples Unlimited | 24” x 24” (600 x 600mm) | 0.5” diameter (12.4mm) 0.004” thick (1mm) |
| Material Testing Capability | Solids, Liquids, Powders, Pastes | Granular Materials, Powders, Slurries, Gels, and Pastes | Solids, Liquid | Solids | Solids |
| Isotropic & Anisotropic Materials | Yes | No | Yes (Requires Cρ and Density) | No | Yes |
| Heterogeneous Materials | Yes | No | Yes | No | No |
| PRICING | $$-$$$ | $ | $$$ | $$$ | $$$$ |
