Insights
GrindoSonic Blog: IET Insights & Material Testing News
Expert insights on impulse excitation technique, non-destructive testing, and material characterization for quality control.
Damping Properties Testing for Ceramics and Metals: A Step-by-Step Guide
A practical step-by-step guide to measuring internal friction and damping in ceramics and metals with impulse excitation technique — from specimen preparation and support placement to signal interpretation and GO/NOGO decisions.
Detecting Crack Propagation Early with Resonance Frequency Testing
Learn how resonance frequency testing and damping ratio measurement detect crack initiation and propagation non-destructively — before fatigue damage becomes structural failure.
Ensuring Uniform Properties During Additive Manufacturing with IET
How impulse excitation technique gives additive manufacturing teams a fast, non-destructive method to verify elastic property uniformity, detect porosity and micro-cracks, and maintain batch-to-batch process consistency.
How Microstructural Changes Leave a Signature in Vibration
Discover how grain growth, porosity shifts, phase transformations, and micro-cracks alter a material's resonance frequency — and how impulse excitation testing captures these changes non-destructively.
How to Measure Young's Modulus Non-Destructively in Composite Materials
Why impulse excitation technique is the fastest, most accurate non-destructive method for measuring Young's modulus in CFRP, GFRP, and other composites — and how it compares to tensile testing, DMA, and strain gauge methods.
Understanding the Impact of Freeze-Thaw Cycles on Material Integrity
How repeated freezing and thawing degrades elastic modulus, nucleates micro-cracks, and shortens service life — and why resonance frequency measurement is the standard tool for tracking freeze-thaw damage non-destructively.
What Is Damping Ratio and Why Does It Matter in Material Testing?
How measuring a material's vibration decay can reveal hidden flaws, improve product quality, and replace costly testing methods.
How to Set Pass/Fail Thresholds in Resonance Frequency Testing
A step-by-step guide to calibrating quality control thresholds that reduce waste, lower costs, and keep defective products off the market.
How to Read a Clean FFT: Separating Resonance from Noise
A practical guide to interpreting FFT charts accurately for better material testing and quality control.
How to Measure Relative Porosity Without Costly Tomography
A practical guide to resonance frequency testing for quality control teams.
Sintering Quality Control with Impulse Excitation: From Green Body to Final Part
How impulse excitation testing delivers fast, non-destructive porosity and stiffness monitoring at every stage of the sintering process.