Ironcore Biaxial Shake Table with Magnetic Motors: Precision and Power in Vibration Testing

At QuakeLogic, we understand that precise and reliable seismic testing is crucial for advancing structural integrity and earthquake resilience. That’s why we’re proud to offer the state-of-the-art ironcore shake biaxial table, designed to meet the highest standards in the industry.

Why Choose the BI-AXIAL IRON CORE Shake Table?

Our ironcore shake table is equipped with cutting-edge linear motor technology, which uses magnetic forces to generate motion. Unlike traditional systems, there is no physical contact between the motor and the rail (gap is less than a 1 mm), resulting in minimal friction. The only friction comes from the rail guards, ensuring smoother, more accurate simulations. This advanced design provides the direct-drive precision and control necessary for high-fidelity testing, making it ideal for engineers and researchers on the forefront of structural testing.

Click HERE for the IRONCORE BIAXIAL shake table product page.

If you want to learn more about the linear motor technology, read our blog HERE.

Key Features of IRONCORE BIAXIAL shake table:

  • Bi-Axial Motion: Two lateral degrees of freedom for comprehensive testing.
  • High Capacity: ± 2g at 50 kg, with a stroke of ±125 mm and up to 15 Hz operational frequency.
  • Precision Control: Closed-loop PID system ensures exact motion execution.
  • Magnetic Linear Motors: No contact between motor and rail, reducing friction and wear.
  • Versatile Waveforms: Supports custom and standard waveforms for diverse testing scenarios.
  • Plug & Play Design: Easy setup, high reliability, and minimal maintenance.
  • EASYTEST Software: The ironcore shake table is integrated with our proprietary EASYTEST software, offering an intuitive interface for test setup, execution, and data analysis. EASYTEST simplifies complex testing procedures, enhances workflow efficiency, and provides comprehensive real-time monitoring and control, making it easier than ever to achieve accurate and consistent results.

Seeing is Believing

Experience the quiet and precise performance of the ironcore biaxial shake table as it effortlessly executes sine sweeps along the x-axis, y-axis, and simultaneously across both axes.

X-AXIS SINE WAVE

Y-AXIS SINE WAVE

X AND Y-AXIS SINE WAVE

The QuakeLogic Advantage

Trusted by leading institutions like NOKIA, TEXAS AM, UNR, UCSD, UNIVERSITY OF TEXAS, CALTECH, IMPERIAL COLLEGE, VIRGINIA TECH, AUS and many more, our shake tables are the pinnacle of seismic testing technology. It’s an investment in accuracy, efficiency, and the future of your research.

Click HERE for our extensive list of past clients.

Additional Accessories

Introducing the QL-MINI digital triaxial MEMS accelerometers and inclinometers combo sensor, designed for seamless integration with a Windows PC via USB. These sensors come with our complimentary QL-VISIO software, enabling real-time data analysis and retrieval with ease.

For enhanced demonstrations, we offer a modular plexiglass model structure specifically designed for use with the shake table. We recommend pairing this structure with five QL-MINI sensors to maximize the demonstration’s effectiveness.

Additionally, we provide a custom-made plexiglass box, known as the GEOBOX, ideal for geotechnical earthquake engineering demonstrations. This robust, waterproof box is perfect for simulating liquefaction, lateral spreading, slope stability, and more, and is designed for easy mounting on the shake table.

About QuakeLogic

QuakeLogic is a leader in seismic and vibration monitoring solutions, committed to enhancing testing and analysis with innovative, high-performance products.

Contact Us

  • Email: sales@quakelogic.net
  • Phone: +1-916-899-0391
  • WhatsApp: +1-650-353-8627
  • Website: www.quakelogic.net

Discover how QuakeLogic’s ironcore shake table, powered by our EASYTEST software, can elevate your seismic testing projects. Contact us today for more information.

Discover the Most Advanced 1-Ton Uniaxial Shake Table

QuakeLogic is proud to introduce our state-of-the-art 1-ton Uniaxial Shake Table, designed to bring unparalleled precision and power to your seismic testing needs. With a 1-ton payload capacity, this shake table is an indispensable tool for engineers and researchers focused on enhancing structural integrity and earthquake resilience.

Key specifications

A spacious top table with dimensions of 150×150 cm (L x W), capable of delivering up to ±1 g acceleration at 1-ton capacity, with a stroke of ±200 mm.

Powered by an advanced electro-mechanical servo motor, this shake table ensures smooth and quiet operation. Unlike traditional hydraulic systems, our shake table is practically maintenance-free, making it a hassle-free addition to your lab.

This IP-based system allows for remote operation and monitoring, providing flexibility and control like never before. Designed for ease of use, the shake table comes with our intuitive EASYTEST software, which requires no specialized computer cards and runs seamlessly on any Windows machine. Plus, its compact design means it’s ready to be installed quickly, so you can start testing without delay.

For more information, visit our product page HERE or contact us at sales@quakelogic.net

About QuakeLogic

QuakeLogic is a leading provider of advanced seismic monitoring solutions, offering a range of products and services designed to enhance the accuracy and efficiency of testing, data acquisition, and analysis.

Contact Information:

For more information about our products and services, please visit our website or contact our sales team. We are here to help you with all your testing and monitoring needs.

What is the UNI 9916 Standard and the Role of Peak Particle Velocity (PPV) in Human Comfort Evaluation?

The UNI 9916 standard, formally titled “Criteria for the Measurement of Vibrations and the Assessment of Their Effects on Buildings,” is a crucial guideline in the field of vibration analysis and monitoring. This standard, established by the Italian National Unification Body (UNI), provides a comprehensive framework for assessing the impact of vibrations on structures and human comfort. A key metric in this standard is the Peak Particle Velocity (PPV), which plays a vital role in evaluating how vibrations affect human comfort. In this blog, we’ll delve into the UNI 9916 standard, its applications, and the significance of PPV in monitoring vibrations.

Overview of UNI 9916 Standard

The UNI 9916 standard outlines the methods for measuring and evaluating vibrations in buildings and structures to ensure they remain within acceptable limits. It is particularly concerned with the impact of vibrations on both the structural integrity of buildings and the comfort of their occupants. The standard is widely used in various sectors, including construction, transportation, and industrial operations, where vibrations can be a significant concern.

What is Peak Particle Velocity (PPV)?

Peak Particle Velocity (PPV) is a measure of the maximum speed at which particles in a material move due to vibrational energy. In simpler terms, it quantifies the intensity of vibrations. PPV is typically expressed in millimeters per second (mm/s) or inches per second (in/s). It is a critical parameter because it directly correlates with the potential for damage to structures and the level of discomfort experienced by humans.

How to Compute PPV

The PPV is calculated using the following formula:

PPV=max(|v(t)|)

where:

  • v(t) is the particle velocity at time t,
  • max(|v(t)|) represents the maximum absolute value of the particle velocity over a given time period.

In practical applications, the particle velocity v(t) is often measured using sensors placed on structures or in the ground. The PPV is then determined by analyzing the sensor data over a specified duration.

The Role of PPV in Human Comfort Evaluation

When it comes to human comfort, vibrations can be a source of annoyance, stress, and even health issues if they exceed certain thresholds. The UNI 9916 standard uses PPV as a primary metric to assess the impact of vibrations on human comfort. Here’s how PPV is employed in this context:

  1. Establishing Thresholds:
    The standard sets specific PPV thresholds that should not be exceeded to ensure human comfort. These thresholds are determined based on extensive research and field studies that consider the human body’s sensitivity to different vibration frequencies and intensities.
  2. Continuous Monitoring:
    By continuously monitoring PPV, engineers and facility managers can ensure that vibration levels remain within the acceptable range. This is particularly important in environments where vibrations are a constant, such as near construction sites, railways, or industrial operations.
  3. Mitigation Measures:
    If PPV readings exceed the thresholds, immediate action can be taken to mitigate the vibrations. This might involve altering operational procedures, installing vibration dampening systems, or even redesigning certain aspects of the infrastructure to reduce vibration transmission.
  4. Compliance and Reporting:
    Compliance with the UNI 9916 standard often requires regular reporting of PPV measurements. These reports help demonstrate that an organization is taking the necessary steps to protect both their structures and the well-being of occupants.

Moving Window Data Samples

To accurately measure PPV, the data is often analyzed using a moving window approach. This involves dividing the continuous stream of vibration data into smaller, overlapping segments or “windows.” Each window is analyzed separately to determine the PPV within that specific time frame.

The steps for using moving window data samples are as follows:

  1. Data Collection:
    Vibration data is continuously collected using sensors over a period of time.
  2. Windowing:
    The data is divided into overlapping segments or windows. The size of each window and the amount of overlap are chosen based on the specific application and desired resolution.
  3. PPV Calculation:
    For each window, the PPV is calculated using the formula mentioned above. This provides a series of PPV values corresponding to different time intervals.
  4. Analysis:
    The series of PPV values are analyzed to identify any periods where the vibrations exceed the acceptable thresholds. This helps in pinpointing specific events or activities that cause excessive vibrations.

Practical Applications

  1. Construction Sites:
    During construction activities, heavy machinery and demolition can generate significant vibrations. Monitoring PPV ensures that these vibrations do not adversely affect nearby buildings or the comfort of residents.
  2. Transportation Networks:
    Railways and highways are common sources of vibrations. By adhering to the UNI 9916 standard, transportation authorities can minimize the impact of these vibrations on adjacent properties and communities.
  3. Industrial Operations:
    Factories and plants often have equipment that generates continuous vibrations. Regular monitoring of PPV helps maintain a comfortable and safe environment for workers.

QuakeLogic’s Role in Vibration Monitoring

QuakeLogic provides advanced dataloggers, seismographs, and accelerographs equipped with built-in functions to compute and plot PPV values against frequencies, adhering to the UNI 9916 standard. These tools offer several advantages:

  1. Integrated GUI:
    QuakeLogic’s devices come with a user-friendly graphical user interface (GUI) that allows for real-time monitoring and analysis of vibration data. The GUI can display PPV values across different frequencies, enabling quick assessment and decision-making.
  2. Automated Data Processing:
    The built-in software automatically processes the collected data, applying the moving window technique to compute PPV values. This automation ensures accuracy and consistency in the measurements.
  3. Visualization and Reporting:
    The devices can generate detailed plots showing PPV values against frequencies. These visualizations help in understanding the frequency components of the vibrations and their potential impact on human comfort and structural integrity.

Conclusion

The UNI 9916 standard, “Criteria for the Measurement of Vibrations and the Assessment of Their Effects on Buildings,” is an essential tool for managing the effects of vibrations on structures and human comfort. By focusing on Peak Particle Velocity (PPV), the standard provides a clear and measurable way to evaluate and mitigate the impact of vibrations. Whether in construction, transportation, or industrial settings, adhering to this standard ensures that both buildings and their occupants are protected from the potentially harmful effects of excessive vibrations.

Understanding and implementing the UNI 9916 standard is crucial for engineers, facility managers, and anyone involved in operations where vibrations are a concern. QuakeLogic’s advanced vibration monitoring tools further enhance the ability to comply with this standard, providing accurate measurements, real-time analysis, and comprehensive reporting. By prioritizing human comfort and structural integrity, we can create safer and more pleasant environments for everyone.

About QuakeLogic

QuakeLogic is a leading provider of advanced seismic monitoring solutions, offering a range of products and services designed to enhance the accuracy and efficiency of testing, data acquisition, and analysis.

Contact Information:

For more information about our products and services, please visit our website or contact our sales team. We are here to help you with all your testing and monitoring needs.