Modification of Compact Setups

Oct 13, 2025 by wbrum.org 16 views

Modification of the Testing Method for the Strength of Industrial Helmet Due to High Speed Impact Load

Introduction

Testing the strength of industrial helmets to impact loads has been a crucial aspect of ensuring worker safety in high-risk environments, such as construction sites. The standard method of testing involves dropping an impact from a height of 2 to 3 meters using a free fall rig. However, this method has been deemed less effective for helmets used in construction work environments, where heavy objects can fall from higher heights, resulting in higher impact speeds. For instance, a bolt falling from a ten-storey building can reach speeds of up to 30 meters per second or more. To overcome this challenge, a new helmet strength measurement technique has been developed using the two-gage method equipped with an impact compressor, capable of producing speeds of up to 50 meters per second.

Background

The current standard method of testing industrial helmets has several limitations. Firstly, it does not accurately simulate the real-world conditions that workers may face in construction environments. Secondly, it may not provide a comprehensive understanding of the helmet's performance under different impact loads. To address these limitations, researchers have developed a new testing technique that uses the two-gage method to measure the helmet's strength under high-speed impact loads.

Methodology

The new testing technique involves regulating the distance between the beater and maintaining constant air pressure at 0.4 MPa to achieve a variation of impact voltage. Three research activities were carried out, including:

Modification of Compact Setups: The compact setup was modified to improve its performance. The steel rod material was replaced with aluminum alloy (AA2024-T3) to reduce weight and increase strength. Additionally, the test rig was modified to have a smoother friction contact, and the shape of the head was adjusted to the helmet testing standard.
Testing the Mechanical Properties of Non-Standard Industry Helmet Materials: The mechanical properties of non-standard industry helmet materials were tested to understand their behavior under different impact loads.
Testing the Strength of the Helmet Using the Indirect Measurement Method (Two Gage Method) and Direct Measurement (Using Uniaxial and Biaxial Strain Gages Near the Impact Point): The helmet's strength was tested using the indirect measurement method (two-gage method) and direct measurement (using uniaxial and biaxial strain gages near the impact point).

Results

The results of the study showed that at the parietal location, the impact voltage reached 82.62 MPa, while at the frontal, temporal, and occipital locations, the voltage produced was around 64 MPa. The incident voltage, which is the voltage absorbed by the specimen, was measured at 9.34 MPa at the parietal location and 7 MPa at other locations. These results show that this method is relatively easy to apply and the helmet tested gives a clear response related to the amount and time of the impact, according to the characteristics of the impact load encountered.

Analysis and Implications

Modification of this test method provides a significant contribution to occupational safety, especially in the construction sector. By using methods that can simulate real conditions, industrial helmets can be tested more accurately to the risks that may occur. This is very important considering that a helmet is one of the vital personal protective instruments (PPE) in protecting workers from injury due to falling objects.

Furthermore, the use of two-gage in the measurement of helmet strength allows a deeper analysis of the voltage distribution and weak points in the helmet design. This information can be used by producers to design helmets that are stronger and more efficient, and can extend the life of the product.

The development of this kind of testing technique also has the potential to be a new standard in industries that are more focused on real conditions in the field, not only limited to the parameters set in the current standards. Thus, this research not only increases the understanding of the dynamics of IMPAK, but also contributes to improving overall work safety.

Conclusion

In conclusion, the modification of the testing method for the strength of industrial helmets due to high-speed impact loads has provided a significant contribution to occupational safety. The new testing technique using the two-gage method has shown to be more effective in simulating real-world conditions and providing a comprehensive understanding of the helmet's performance under different impact loads. This research has the potential to be a new standard in industries that are more focused on real conditions in the field, and can contribute to improving overall work safety.

Future Directions

Future research directions include:

Further Development of the Two-Gage Method: The two-gage method can be further developed to improve its accuracy and reliability.
Testing of Different Helmet Materials: The testing technique can be used to test different helmet materials to understand their behavior under different impact loads.
Development of New Helmet Designs: The information obtained from this research can be used to design new helmets that are stronger and more efficient.

References

[1] [Reference 1]
[2] [Reference 2]
[3] [Reference 3]

Note: The references are not included in this response as they are not provided in the original content.
Frequently Asked Questions (FAQs) about Modification of the Testing Method for the Strength of Industrial Helmet Due to High Speed Impact Load

Q: What is the current standard method of testing industrial helmets?

A: The current standard method of testing industrial helmets involves dropping an impact from a height of 2 to 3 meters using a free fall rig.

Q: What are the limitations of the current standard method of testing industrial helmets?

A: The current standard method of testing industrial helmets has several limitations, including:

It does not accurately simulate the real-world conditions that workers may face in construction environments.
It may not provide a comprehensive understanding of the helmet's performance under different impact loads.

Q: What is the new testing technique developed in this research?

A: The new testing technique developed in this research uses the two-gage method equipped with an impact compressor, capable of producing speeds of up to 50 meters per second.

Q: How does the two-gage method work?

A: The two-gage method involves regulating the distance between the beater and maintaining constant air pressure at 0.4 MPa to achieve a variation of impact voltage. The method uses two gages to measure the voltage distribution and weak points in the helmet design.

Q: What are the benefits of using the two-gage method?

A: The benefits of using the two-gage method include:

It can simulate real-world conditions more accurately than the current standard method.
It provides a comprehensive understanding of the helmet's performance under different impact loads.
It can be used to design helmets that are stronger and more efficient.

Q: What are the implications of this research for occupational safety?

A: The implications of this research for occupational safety are significant. The new testing technique can be used to test industrial helmets more accurately to the risks that may occur in construction environments. This can contribute to improving overall work safety.

Q: What are the future directions for this research?

A: The future directions for this research include:

Further development of the two-gage method to improve its accuracy and reliability.
Testing of different helmet materials to understand their behavior under different impact loads.
Development of new helmet designs that are stronger and more efficient.

Q: What are the potential applications of this research?

A: The potential applications of this research include:

Development of new helmet designs for construction workers.
Testing of industrial helmets for use in other high-risk environments, such as manufacturing or mining.
Development of new testing techniques for other personal protective equipment (PPE).

Q: What are the limitations of this research?

A: The limitations of this research include:

The study was conducted in a laboratory setting and may not accurately reflect real-world conditions.
The study only tested a limited number of helmet materials and designs.

Q: What are the future research directions for this topic?

A: The future research directions for this topic include:

Further development of the two-gage method to improve its accuracy and reliability.
Testing of different helmet materials to understand their behavior under different impact loads.
Development of new helmet designs that are stronger and more efficient.

Q: How can this research be applied in real-world settings?

A: This research can be applied in real-world settings by:

Developing new helmet designs that are stronger and more efficient.
Testing industrial helmets for use in construction environments.
Developing new testing techniques for other PPE.

Q: What are the potential benefits of this research for workers?

A: The potential benefits of this research for workers include:

Improved safety in construction environments.
Development of new helmet designs that are stronger and more efficient.
Improved understanding of the helmet's performance under different impact loads.

Q: What are the potential benefits of this research for industry?

A: The potential benefits of this research for industry include:

Development of new helmet designs that are stronger and more efficient.
Improved understanding of the helmet's performance under different impact loads.
Improved safety in construction environments.

Q: What are the potential benefits of this research for society?

A: The potential benefits of this research for society include:

Improved safety in construction environments.
Development of new helmet designs that are stronger and more efficient.
Improved understanding of the helmet's performance under different impact loads.