Impact / Modal Hammers for Reliable Impact Measurements

Each PCB® Modally Tuned®, ICP® instrumented impact hammer is equipped with a highly durable, rugged force sensor that is seamlessly integrated directly into the hammer’s striking surface, ensuring precise and reliable impact measurements.

“Modal Tuning” is a specialized feature designed to ensure that the inherent structural characteristics of the hammer do not interfere with or distort the measurement results. This is achieved by effectively eliminating hammer resonances within the frequency range of interest, preventing these resonances from corrupting the test data. The result is a set of measurements that are more accurate, reliable, and consistent across different testing conditions.

The force sensor accurately measures both the amplitude and the frequency content of the energy stimulus applied to a test object. Accelerometers are employed alongside the hammer to capture detailed measurements of the object’s structural response resulting from the hammer blow. Additionally, a variety of interchangeable tips provided with each hammer allow the energy content of the force impulse to be precisely adjusted, ensuring it meets the specific requirements of the item being tested.

Using advanced multi-channel data acquisition and sophisticated analysis software, the test engineer is able to accurately ascertain a wide variety of mechanical properties. This process leads to a comprehensive understanding of an object’s structural behavioral characteristics under different conditions. The range of items analyzed can include resonance detection, mode shapes, transfer characteristics, as well as crucial aspects of structural health, such as the early identification of cracks and fatigue damage.

Highlights:

Modally Tuned® to provide more consistent results
Variety of hammers to suit any size test object
Assortment of tips offer frequency tailored impulse

Applications:

Structure Health Testing
Resonance Determination
Modal Analysis

Responsive ICP Modal Hammers Table
    
        ICP® MODAL HAMMERS
        
                Model Number
                Sensitivity
                Measurement Range
                Resonant Frequency
                Non-Linearity
                Discharge Time Constant
            

        
                086E80
                100 mV/lbf
                50 lbf pk
                ≥100 kHz
                ≤1 %
                ≥100 sec
            

                (TLD)086C01
                50 mV/lbf
                ±100 lbf pk
                ≥15 kHz
                ≤1 %
                ≥500 sec
            

                (TLD)086C02
                50 mV/lbf
                ±100 lbf pk
                ≥22 kHz
                ≤1 %
                ≥500 sec
            

                (TLD)086C03
                10 mV/lbf
                ±500 lbf pk
                ≥22 kHz
                ≤1 %
                ≥2,000 sec
            

                (TLD)086C04
                5 mV/lbf
                1,000 lbf pk
                ≥22 kHz
                ≤1 %
                ≥2,000 sec
            

                (TLD)086D05
                1 mV/lbf
                5,000 lbf pk
                ≥22 kHz
                ≤1 %
                ≥2,000 sec
            

                (TLD)086D20
                1 mV/lbf
                5,000 lbf pk
                ≥12 kHz
                ≤1 %
                ≥1,400 sec
            

                (TLD)086D50
                1 mV/lbf
                5,000 lbf pk
                ≥5 kHz
                ≤1 %
                ≥2,000 sec
            

                Typical Applications
                Resonance detection, mode analysis, transfer characteristics, crack and fatigue detection
            

    

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