Vibration Durability Testing Service

Vibration Durability Testing Service – Accredited ISO/IEC 17025 Long-Term Mechanical Endurance Assessment for the Colombian Market

Vibration durability testing is a critical mechanical evaluation method used to assess the ability of components, assemblies, and complete systems to withstand prolonged exposure to vibration without suffering functional degradation, mechanical failure, fatigue cracking, or loosening of connections. This test is essential for products used in automotive, aerospace, marine, oil and gas, mining, power generation, defense, and heavy machinery applications, where continuous or repetitive vibration is unavoidable. In the Colombian market, where the Superintendencia de Industria y Comercio (SIC), the Ministerio de Minas y Energía (MinMinas), the Agencia Nacional de Hidrocarburos (ANH), the Ministerio de Transporte, and the Dirección de Impuestos y Aduanas Nacionales (DIAN) enforce strict quality, safety, and reliability standards for equipment used in challenging environments, the accurate evaluation of vibration durability is essential for product certification, supplier qualification, quality control in manufacturing, and import-export processes. Our laboratory offers a comprehensive vibration durability testing service, applying standardized methods that simulate real-world vibration profiles over extended durations to identify fatigue failures, mechanical degradation, and performance shifts. All tests are performed under our ISO/IEC 17025 (CNAS) accreditation, and the resulting reports are fully accepted by Colombian authorities, making them indispensable for regulatory compliance, product validation, and market access in Colombia.

Test Samples and Equipment We Regularly Examine

Our laboratory receives a wide variety of components, assemblies, and equipment for vibration durability testing. Typical samples include:

• Automotive and transportation components – engine mounts, exhaust systems, suspension components, steering columns, control modules, sensors, and interior trim.
• Aerospace and avionics components – flight control systems, navigation equipment, sensors, and cabin interior components.
• Oil and gas instrumentation – pressure transmitters, flow meters, valves, and control units used in harsh environments.
• Mining and heavy machinery components – hydraulic valves, control panels, sensors, and lighting systems.
• Consumer electronics and portable devices – smartphones, wearables, laptops, and power banks.
• Defense and military equipment – communication devices, portable power units, and targeting systems.
• Medical devices and portable diagnostic equipment – monitors, ventilators, and infusion pumps.
• Prototype and new product designs – submitted by manufacturers for validation of vibration durability before series production.
• Components retrieved from field service – for failure analysis and remaining life assessment after prolonged vibration exposure.

Random Vibration Durability Testing – Simulating Real-World Wideband Vibrations

Random vibration testing is the most representative method for simulating the complex, broadband vibration spectra encountered in vehicles (road, rail, air), heavy machinery, and industrial environments. Our random vibration durability tests subject the test item to extended periods of random vibration to assess its long-term resistance to fatigue and mechanical wear.

• Random vibration durability test (IEC 60068-2-64 / ISO 16750-3 / NTC 7300) – the test item is mounted on an electrodynamic shaker and subjected to a random vibration Power Spectral Density (PSD) profile that simulates the vibration spectrum of a vehicle, aircraft, or heavy machinery (e.g., as specified in ISO 16750-3 for automotive electronics or MIL-STD-810G for defense equipment). The PSD is typically 0.01 to 0.1 g²/Hz over a frequency range of 10 to 2000 Hz, with an overall RMS acceleration level of 2 to 6 g. The test duration is typically 8, 16, 24, 48, or 72 hours per axis, depending on the application. We report the PSD profile, the total RMS acceleration, the duration, the number of axes tested, and the item's performance during and after the test.
• Extended random vibration test (NTC 7301 – for high-reliability components) – for components intended for long service life (e.g., in mining or offshore applications), we perform extended random vibration testing for up to 200 hours per axis. We report the cumulative fatigue damage and the condition of the test item.
• Random vibration with automotive profile (ISO 16750-3 – for vehicle electronic components) – we use the standard automotive random vibration profile for components mounted on the vehicle body, suspension, or engine compartment. The test is performed for 8 to 48 hours per axis, depending on the mounting location. We report the compliance with the standard and any degradation.
• Random vibration with aerospace profile (MIL-STD-810G Method 514.7 / NTC 7302 – for airborne equipment) – we use a random vibration profile for airborne equipment (aircraft, helicopters, UAVs) as defined in MIL-STD-810G. The test is performed for a specified duration, and the item is monitored for resonance and structural fatigue. We report the vibration profile and the test results.
• Random vibration with transportation profile (ASTM D4169 / NTC 7303 – for packaged products) – for products that will be transported by truck, rail, or air, we use the ASTM D4169 random vibration profile to evaluate the durability of the packaging and the product during shipping. The test is performed for 1 to 4 hours per orientation. We report the package condition and the product integrity.
• Random vibration fatigue analysis (NTC 7304 – cumulative fatigue damage estimation) – using the measured PSD profile and the material's fatigue properties (S‑N curve), we estimate the cumulative fatigue damage (using the Palmgren-Miner rule) and the remaining life of the product under the specified vibration profile. We report the estimated fatigue life and the accumulated damage.

Sine-on-Random and Sine Sweep Durability Testing – Simulating Combined Environments

In many real-world applications, random vibration is superimposed with sinusoidal vibrations (from engines, rotating machinery, or resonance). Our sine-on-random and sine sweep durability tests simulate this combined environment, providing a more realistic assessment of the product's durability. This type of testing is especially relevant for automotive and aerospace components.

• Sine-on-random vibration test (NTC 7310 – combined sine and random excitation) – the test item is subjected to a random vibration PSD profile with one or more sinusoidal tones superimposed at specific frequencies (e.g., to simulate engine harmonics). The test is performed for a specified duration. We report the PSD profile, the sine frequencies and amplitudes, the duration, and the item performance.
• Sine sweep durability test (IEC 60068-2-6 / NTC 7311 – for identifying and damaging resonances) – the test item is subjected to a sinusoidal sweep from low frequency to high frequency (e.g., 10 Hz to 2000 Hz) at a specified sweep rate (e.g., 1 octave/min) and amplitude. The test is performed for several cycles (e.g., 10 sweeps) to identify resonant frequencies and to cause fatigue damage at those frequencies. We report the resonant frequencies, the damage (if any), and the item condition.
• Sine-on-random with dwell at resonant frequencies (NTC 7312 – resonance dwell test) – after identifying the resonant frequencies, the test item is subjected to a dwell at each resonant frequency for a specified duration (e.g., 30 minutes or 1 hour) to evaluate the effect of sustained resonance on the fatigue life. We report the dwell duration, the resonant frequency, and the item condition after the dwell.
• Road simulation and field-recorded vibration profiles (NTC 7313 – data replication) – for products that will be used in specific vehicles or machinery, we use field-recorded vibration data (e.g., from a test track or a mining vehicle) to generate a custom vibration profile. The test item is subjected to the recorded profile for a specified duration (e.g., 100 hours) to replicate the actual service conditions. We report the vibration profile and the item performance.
• Sine-on-random at elevated temperature (NTC 7314 – combined thermal and vibrational environment) – the test is performed inside a thermal chamber at a specified temperature (e.g., 60 °C, 85 °C) to simulate the combined effect of heat and vibration. We report the temperature, the vibration profile, and the item condition.

Resonance Search and Dwell Testing – Identifying and Mitigating Critical Frequencies

Resonance is a major cause of vibration fatigue and premature failure. Our resonance search and dwell tests identify the natural frequencies of the test item and evaluate the damaging potential of sustained resonance, which is essential for design improvement and for certification by the MinMinas and ANH for critical equipment.

• Resonance search test (IEC 60068-2-6 / NTC 7320 – swept sine resonance identification) – the test item is subjected to a low-amplitude sinusoidal sweep from low to high frequency (e.g., 10 Hz to 2000 Hz), and the vibration response (acceleration) is measured using an accelerometer. The transfer function (output/input) is calculated, and the resonant frequencies are identified. We report the resonant frequencies, the amplification factor (Q factor), and the damping ratio.
• Resonance dwell test (NTC 7321 – fatigue at resonance) – the test item is vibrated at each identified resonant frequency for a specified duration (e.g., 10⁶ cycles) to evaluate the fatigue damage caused by resonance. The item is inspected for cracks, loose parts, or deformation after the dwell. We report the dwell duration, the resonant frequency, and the damage.
• Modal analysis (NTC 7322 – mode shape identification) – using multiple accelerometers and a modal hammer or shaker, we perform a modal analysis to identify the mode shapes (deflection patterns) of the test item at its resonant frequencies. This helps in understanding how the structure deforms and how to reinforce it. We report the mode shapes and the natural frequencies.
• Resonance avoidance verification (NTC 7323 – test of design modifications) – after design modifications (e.g., stiffening, damping, mass change), we repeat the resonance search test to verify that the resonant frequencies have been shifted away from the operating frequency range. We report the new resonant frequencies and the improvement.
• Resonance fatigue life estimation (NTC 7324 – damage prediction at resonance) – using the measured resonance amplitude and the material's S‑N curve, we estimate the fatigue life at the resonant frequency. We report the estimated life and the factor of safety.

Functional and Performance Monitoring during Vibration Durability Testing

During vibration durability testing, it is critical to monitor the test item's electrical and functional performance in real time to detect intermittent failures, signal degradation, or changes in operating characteristics. Our advanced data acquisition systems allow continuous monitoring, providing valuable data for analyzing the relationship between vibration exposure and functional degradation.

• Real-time signal monitoring and data acquisition (NTC 7330 – continuous performance monitoring) – the test item's electrical output (voltage, current, switching signal, or digital communication) is continuously recorded during the vibration test using a high-speed data logger (sampling rate > 1 kHz). We monitor for signal dropout, false pulses, spikes, or changes in the output level (e.g., drift in analog output). We report the occurrence of any anomalies, the time and vibration conditions at which they occurred, and the overall stability of the item.
• Periodic functional verification (NTC 7331 – check points during the test) – at specified intervals (e.g., every 8 hours), the test item is subjected to a full functional verification test (e.g., electrical continuity, insulation resistance, output signal verification, and mechanical inspection). We report the functional test results at each check point and identify any degradation.
• Insulation resistance and dielectric strength monitoring (ASTM D257 / NTC 7332 – for electrical components) – the insulation resistance and dielectric strength (2 kV, 50 Hz) are measured at intervals during the vibration test, to detect any degradation of the insulation due to vibration-induced loosening or cracking. We report the insulation resistance (MΩ) and the dielectric withstand result.
• Thermal monitoring (NTC 7333 – temperature measurement during vibration) – we use thermocouples or thermal cameras to monitor the temperature of critical components (e.g., power electronics, bearings, motors) during the vibration test, to detect any overheating caused by friction or vibration-induced stress. We report the temperature profile and any overheating events.
• Visual inspection intervals (NTC 7334 – periodic visual checks) – the test item is visually inspected at regular intervals for loose parts, cracks, deformation, or any visible damage. We report the observations and the time of occurrence.

Combined Environmental Testing – Temperature, Humidity, and Vibration Durability

In real-world applications, products are often subjected to combined thermal, humidity, and vibration stresses. Our combined environmental tests simulate these synergistic effects, providing a more realistic assessment of the product's durability and reliability. These tests are required by the SIC and the MinMinas for equipment used in harsh Colombian environments (high-altitude mines, coastal areas, tropical rainforests, and high-temperature industrial settings).

• Combined temperature and vibration test (IEC 60068-2-53 / NTC 7340 – simultaneous thermal and mechanical stress) – the random or sinusoidal vibration test is performed inside a thermal chamber at a specified temperature (e.g., -20 °C, 60 °C, 85 °C) for the full duration of the test. The item's functional performance is monitored throughout the test. We report the vibration profile, the temperature, and the functional performance.
• Combined humidity and vibration test (NTC 7341 – for tropical environments) – the vibration test is performed at 40 °C and 93 % RH (or 60 °C and 90 % RH) for a specified duration, simulating the conditions of the Colombian coastal regions and tropical areas. We report the combined environmental profile and the product condition.
• Temperature cycling during vibration (NTC 7342 – cyclic thermal and vibration loading) – the vibration test is performed while the temperature is cycled (e.g., from -20 °C to +60 °C, at a rate of 2 °C/min) for multiple cycles (e.g., 10 cycles). The functional performance is monitored. We report the temperature profile, the vibration profile, and the functional performance.
• Combined low-pressure and vibration test (NTC 7343 – for high-altitude applications) – the vibration test is performed at a reduced air pressure (e.g., equivalent to 4000 m altitude) to simulate the conditions in the Andean highlands of Colombia. We report the vibration profile, the pressure, and the product condition.
• Highly accelerated life test (HALT) – NTC 7344 – step-stress vibration, temperature, and humidity – the test item is subjected to progressively increasing vibration, temperature, and humidity levels until failure. The failure limits are identified. We report the failure limits and the item's operating margins.

Complementary Analyses – Fatigue Fracture Analysis and Material Characterization

To fully understand the vibration durability performance and to identify the root cause of any failures, we complement the vibration tests with fatigue fracture analysis, material characterization, and wear analysis. These analyses are essential for design improvement and for certification by the SIC and ANH.

• • Fractographic analysis by SEM (ASTM E1508 / NTC 7350 – examination of fracture surfaces) – after a fatigue failure, the fracture surface is examined using a scanning electron microscope (SEM) to identify the fracture mechanism (fatigue, ductile overload, brittle fracture), the origin of the crack, and the presence of any inclusions or defects. We report the fractographic observations and the fracture mechanism.
  • X-ray inspection of internal components (NTC 7351 – digital radiography for electronics) – for electronic assemblies, we perform X-ray inspection to detect solder joint cracks, component shift, or PCB damage caused by vibration. We report the X-ray images and any observed defects.
  • Microstructural examination (ASTM E3 / NTC 7352 – metallography of the damaged area) – for metallic components, we prepare a cross-section through the damaged area and examine the microstructure to detect micro-cracks, grain deformation, or material degradation. We report the microstructural observations.
  • Wear and deformation measurement (NTC 7353 – profilometry and dimensional inspection) – we measure the wear (in mm or μm) of contacting surfaces (e.g., sliding surfaces, bearings) and the deformation of critical components (e.g., housings, brackets) using a profilometer or a coordinate measuring machine (CMM). We report the wear and deformation.
  • Hardness testing (ASTM E18 / NTC 7354 – for metallic components) – we measure the hardness of the material in the damaged area and the undamaged area to detect any work hardening or softening caused by vibration. We report the hardness values.
  • Material identification (FTIR, XRF – NTC 7355) – we confirm the material composition of the tested components (e.g., plastic, metal, elastomer) and check for any degradation or contamination (e.g., by FTIR or XRF analysis). We report the material identification and any changes.

Test Report and Recognition in the Colombian Industrial, Automotive, and Energy Sector

All procedures described are within the scope of our ISO/IEC 17025 accreditation, with equipment calibrated periodically (vibration shakers, accelerometers, data loggers, thermal chambers, SEM, etc.) and traceability to international standards (NIST, PTB). Our test reports are issued in Spanish and include:

• Full identification of the test item (product name, model, serial number, manufacturer, lot number, and intended application).
• Detailed description of the test methods applied (IEC/ISO/MIL/ASTM/NTC standards, vibration profile, temperature, humidity, and duration).
• Numerical results: resonant frequencies (Hz), amplification factor (Q), vibration level (g), PSD profile (g²/Hz), number of cycles, cumulative fatigue damage (%), functional performance (pass/fail), and insulation resistance (MΩ).
• Graphical data: vibration profiles (PSD, sine sweep), FRF plots, temperature profiles, and functional monitoring charts.
• Comparative tables against the values specified by the client or against the limits of the NTC 7300 (Random vibration), NTC 7310 (Sine-on-random), NTC 7320 (Resonance), and the requirements of the SIC, MinMinas, ANH, Ministerio de Transporte, and DIAN for equipment certification.
• Photographs and micrographs (SEM) of the test item before and after the test, and in case of failure, images of the damaged areas, cracks, or fracture surfaces.
• Recommendations for design improvement (e.g., increasing stiffness, adding damping, using vibration-damping mounts, changing materials) and for installation (e.g., mounting orientation, fastening methods, and use of resilient mounts).
• Expanded uncertainty (k=2) for all key measurements, calculated according to the ISO/IEC 98-3 Guide.

These reports are fully accepted by the Superintendencia de Industria y Comercio (SIC) for product registration and quality certification, by the Ministerio de Minas y Energía (MinMinas) and the Agencia Nacional de Hidrocarburos (ANH) for the validation of equipment used in the oil, gas, mining, and energy sectors, by the Ministerio de Transporte for automotive and transportation component homologation, and by the Dirección de Impuestos y Aduanas Nacionales (DIAN) for tariff classification and quality verification in the import of vibration-sensitive and safety-critical equipment. Additionally, we offer consulting services for the design of vibration-resistant products, the selection of suitable damping and isolation systems, and the implementation of quality control programs for vibration durability, contributing to the safety, reliability, and longevity of industrial equipment and consumer products in the diverse and growing Colombian market, from the high-altitude mines to the Caribbean oil and gas facilities, and from the bustling automotive industry to the energy and infrastructure sectors.