Insights
GrindoSonic Blog: IET Insights & Material Testing News
Expert insights on impulse excitation technique, non-destructive testing, and material characterization for quality control.
ASTM C215 for Carbon and Graphite Materials: Resonance Testing for Elastic Property Measurement
Learn how ASTM C215 applies to carbon and graphite materials, how resonance testing determines elastic properties, and why impulse excitation methods are valuable for non-destructive material characterisation.
Determining the Dynamic Young's Modulus of Carbon and Graphite in Hot Cell Environments Using Impulse Excitation Testing
Learn how dynamic Young's modulus of carbon and graphite can be determined in hot cell environments using non-destructive impulse excitation testing, including practical considerations, applicable standards, and measurement challenges.
Dynamic Young's Modulus vs Static Young's Modulus for Graphite: Understanding the Difference
Learn the difference between dynamic and static Young's modulus for graphite, how each property is measured, and why dynamic measurements using Impulse Excitation Technique are valuable for material characterisation.
Impulse Excitation Testing for Irradiated Graphite: A Non-Destructive Method for Material Characterisation
Discover how Impulse Excitation Technique can be used to evaluate irradiated graphite materials through non-destructive measurement of dynamic properties such as Young's modulus and damping.
Non-Destructive Testing of Carbon Materials Using Impulse Excitation Testing
Learn how Impulse Excitation Technique provides a reliable non-destructive method for evaluating carbon materials, including graphite, carbon composites, and advanced engineering materials.
Radiation Effects on Resonance Frequency Measurements in Graphite Materials
Understand how irradiation affects resonance frequency measurements in graphite and how Impulse Excitation Technique can reveal changes in stiffness, damping, and material behaviour.
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 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 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 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.