Proven in Practice

IET Solutions for Quality Control & Material Testing

54 peer-reviewed studies show how impulse excitation solves engineering problems in ceramics, metals, automotive, aerospace, and additive manufacturing.

Fifty-four peer-reviewed studies show how Impulse Excitation Technique solves engineering problems in ceramics, metals, additive manufacturing, and seven other industries. The research spans five decades and journals including the Journal of the European Ceramic Society, International Journal of Fatigue, Ceramics International, and Scientific Reports. Properties measured range from elastic modulus and damping to thermal shock resistance and defect detection. Each solution presents the problem, the IET method used, and the measured outcome.

Doubling Stiffness with 3D Metal-Ceramic Architectures

Innovative composite design combining rigid ceramics with ductile metals in three-dimensional architectures for doubled stiffness performance.

compositesmetal-ceramic
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Quality Control of 3D-Printed Polymer Parts

Non-destructive impulse excitation technique for identifying and evaluating internal defects in FDM polyamide components.

Additive Manufacturingfdm
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Durable Ceramics for Aerospace Flow Control Systems

Cost-effective MgO-Al2O3, MgO-CaZrO3, and YSZ ceramic composites for DBD plasma actuators in aerodynamic flow control and ice mitigation.

Ceramicsplasma-actuators
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Manufacturing High-Conductivity Copper with AM

Feedstock formulation and processing optimization for producing fully dense, highly conductive copper parts through material extrusion AM.

Additive Manufacturingcopper
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Quality Control of 3D-Printed Aerospace Lattice Structures

Validating impulse excitation technique for detecting manufacturing defects in laser powder bed fusion aluminum alloy lattice structures.

Additive Manufacturinglpbf
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Process Parameters Control Fatigue Performance in AM Superalloys

Investigating how process gas conditions affect VHCF performance of heat-treated laser powder bed fusion manufactured IN-718 superalloy.

Additive Manufacturinglpbf
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Disc Brake Noise Reduction Through Metallurgical Control

How controlling carbon equivalent in gray cast iron rotors influences elastic modulus and resonances to reduce disc brake noise.

Elastic ModulusAutomotive
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Breaking the Honing Bottleneck

Stone selection testing transformed a struggling cylinder liner line, from erratic 5-minute cycles and 270 liners per shift to consistent 55-second cycles.

HoningGrinding
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Dental Zirconia That Resists Long-Term Degradation

Developing calcium oxide-stabilized zirconia with high toughness, strength, and exceptional resistance to hydrothermal degradation.

Ceramicszirconia
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Quality Control of Ceramic PGA Microprocessor Packages

Non-destructive flaw detection in ceramic pin grid arrays for high-power microprocessor packaging using resonant frequency testing.

NDTIET
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Material Selection for Gas Turbines and Rocket Propulsion

Holistic characterization of MgO-Al2O3, MgO-CaZrO3, and Y2O3-ZrO2 composites for gas turbine, rocket, and hybrid electric propulsion applications.

aerospaceCeramics
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100% Non-Destructive Inspection of Grinding Wheels

Research study demonstrating how elastic modulus measurements can predict grinding wheel performance and enable non-destructive quality screening.

grinding wheelsquality control
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Validating IET Accuracy Against Standard Methods

Validating IET methodology against dynamic mechanical analysis for glass bead reinforced thermoplastic composites.

IETmethodology
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Low-Energy Ceramics for Industrial Catalysis

Characterizing how elevated temperatures affect the structural evolution and performance of ceramic-like geopolymer-cordierite composites for catalysis and filtration.

Ceramicsgeopolymer
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Multifunctional Ceramics for Aerospace Applications

Comprehensive characterization of MgO-Al2O3, MgO-CaZrO3, and YSZ ceramic composites for thermal protection systems, thermal barrier coatings, and plasma actuators.

aerospaceCeramics
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Advanced Ceramics for High-Temperature Radar Windows

Developing ceramic materials via slip casting and pressureless sintering for radar frequency applications at elevated temperatures.

Ceramicssilicon-nitride
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Root Cause Analysis of Industrial Refractory Failures

Understanding the seven main reasons for refractory problems in industry and contributing factors to reduce unexpected failures and costs.

refractoriesfailure-analysis
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Zirconia Toughening Extends Refractory Service Life

Improving ceramic thermal shock resistance through unstabilized monoclinic zirconia additions that enhance crack deflection mechanisms.

refractoriesthermal-shock
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Detecting Micro-Cracks in Fired Ceramics

IET internal friction measurement detects cooling-rate damage in porcelain stoneware and terracotta that Young's modulus alone misses.

Ceramicsporcelain
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Sustainable Asphalt from Demolition Waste and Natural Fibers

Optimizing warm mix asphalt with construction waste aggregates and Alfa plant fibers for climate-resilient, eco-friendly road surfaces.

constructionrecycling
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Modern Testing of Earth-Based Adobe Bricks

Investigating hygro-thermal-mechanical properties of raw earth adobe bricks stabilized with organic additives.

earth-constructionadobe
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Engineered Ceramics for Air Bearing Systems

Developing porous ceramic materials with optimized load capacity and stiffness for precision engineering aerostatic bearing applications.

Ceramicsalumina
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Optimizing Heat Treatment for Printed Aluminum

Stress relief and heat treatment optimization for AlSi7Mg and AlSi10Mg manufactured by laser powder bed fusion using IET characterization.

Additive Manufacturinglpbf
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Optimizing Infill Patterns for Additive Copper

Optimizing infill patterns and strand placement for manufacturing high-density pure copper components through filament-based MEX additive manufacturing.

Additive Manufacturingmaterial-extrusion
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Electric Motor Cores from Additive Manufacturing

Developing and characterizing mechanical and magnetic properties of high-silicon electrical steel components manufactured by filament-based MEX.

Additive Manufacturingmaterial-extrusion
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Process Monitoring for Consistent AM Part Quality

Methodology to categorize powder bed fusion laser beam parts based on manufacturing process parameters using resonant frequency analysis.

Additive Manufacturingpbf-lb
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Combining Sustainability with Vibration Damping

Evaluating tensile, impact, and vibration damping characteristics of woven flax-carbon polyamide hybrid composites versus pure fiber systems.

compositesbiocomposites
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100% Inspection of Continuous Casting Break Rings

Development of 100% NDT inspection method for hexagonal boron nitride break rings used in horizontal continuous casting of steel.

NDTIET
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Mechanical Characterization of Bulk Metallic Glass

Investigating mechanical behavior and scratch response characteristics of Cu47Zr46Al7 bulk metallic glass.

bulk-metallic-glassmechanical-testing
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Statistical Quality Control in Ceramic Manufacturing

Application of non-destructive testing methods to correlate and optimize process parameters in ceramic tile manufacturing.

NDTCeramics
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How Thermal Parameters Control Ceramic Properties

Evaluating how thermal processing parameters including heating temperature and cooling rate influence ceramic mechanical properties measured by IET.

Ceramicsthermal-processing
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Detecting Graphite Degradation in Ductile Iron Production

Non-destructive detection of graphite nodularity variations in ductile iron castings caused by magnesium fading during pouring.

NDTIET
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Replacing Unreliable Traditional Grinding Wheel Grading

How the sonic method provides a conclusive, non-destructive approach to determining grinding wheel grade with real physical significance.

GrindingQuality Control
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Elastic Modulus Predicts Grinding Wheel Performance

Fast non-destructive test procedure using GrindoSonic to measure elastic modulus as reliable indicator of grinding wheel hardness.

GrindingQuality Control
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High-Temperature Testing Accelerates Refractory Development

Using GrindoSonic MK7 for elevated temperature testing to optimize green-state and high-temperature properties of advanced refractory castables.

refractoriescastables
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Cost Reduction Through Honing Stone Quality Control

How using stones of similar bond hardness improved surface finish, reduced consumption, and cut manufacturing costs at Cummins.

HoningQuality Control
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Proven NDT Methods Adapted to Additive Manufacturing

Applying established IET methodology from refractory and cement industries to quality control in additive manufacturing.

Additive ManufacturingQuality Control
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Optimizing Kiln Furniture for Extended Service Life

SiC and mullite-corundum kiln furniture design for high-temperature ceramic firing with optimized microstructure and thermal shock resistance.

Ceramicshigh-temperature
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Property Correlations Enable Better Ladle Brick Selection

Correlations between physical characteristics and elastic modulus for ladle brick quality control using sonic testing methods.

Elastic ModulusIET
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Early Property Assessment Guides Sawing Decisions

Using GrindoSonic for assessing stiffness properties of entire timber logs for structural applications.

woodtimber
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Metal-Free Dental Implants with Long-Term Reliability

Developing zirconia compositions with enhanced fracture resistance and hydrothermal aging stability for oral implant applications.

Ceramicszirconia
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Fire Resistance Testing of Modular Building Panels

Evaluating fire safety characteristics of steel fiber-reinforced concrete panels for 3D volumetric modular building systems.

concretesfrc
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Surface Finishing Effects on Pipeline Steel Properties

Characterizing mechanical property changes in high-strength low-alloy steel from surface grinding operations.

steelGrinding
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Upgrading Gypsum Boards with Recycled Bio-Waste

Recovering bio-waste materials from paper and wood recycling to enhance gypsum properties for circular economy construction applications.

gypsuminsulation
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Sustainable Refractories with Recycled Content

Evaluating how recycled andalusite with varying purity levels affects refractory composition, thermomechanical performance, and thermal shock behavior.

refractoriesrecycling
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Quality Control of Refractory Bricks in Steelmaking

Sonic control correlations between elastic modulus and physical characteristics for steel ladle refractory brick quality control.

Elastic ModulusIET
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IET Applied to Industrial Refractory Testing

Application of impulse excitation technique originally developed for grinding wheels to assess refractory product quality.

IETNDT
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Rapid NDT Replaces Destructive Refractory Testing

Practical application of resonant frequency technique for final inspection of conventional refractory products with mathematical correlations.

IETNDT
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Accelerated Thermal Shock Testing for Refractories

Ribbon test method combined with elastic modulus measurement for efficient refractory thermal shock evaluation.

Elastic ModulusIET
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Extending NDT Methods to Resin-Bonded Wheels

Application of GrindoSonic to resinoid bonded grinding wheels comparing E-modulus measurements with bending test results.

GrindingElastic Modulus
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Predicting Rock Strength Without Destructive Testing

GrindoSonic apparatus for indirectly determining rock compressive strength through dynamic Young's modulus, porosity, and density correlations.

Elastic ModulusIET
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Steel Industry Quality Assurance with IET

The significance of elastic modulus measurement for refractory materials selection and engineering in steel production.

Quality ControlElastic Modulus
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Industrial Grading of Structural Logs Without Waste

Industrial protocol for mechanical characterization and classification of tree trunks used for structural beams and floors using impulse excitation technique.

woodtimber
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Industrial-Scale Timber Strength Grading

German patent by Fagus Grecon for mechanical strength grading device optimizing structural timber utilization.

Elastic ModulusNDT
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Bond Modification for Application-Specific Grinding Tools

How ceramic bond composition and adaptation enables significant performance improvements in grinding applications.

GrindingCeramics
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