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Related Concept Videos

Manufacture of Concrete Masonry Units01:27

Manufacture of Concrete Masonry Units

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The process of manufacturing concrete masonry units begins by mixing stiff concrete composed of Portland cement, aggregates, and water. This mixture is then poured into metal molds. To ensure the concrete settles uniformly and to avoid separation of its components, the mixture in the molds is subjected to vibration. Shortly after, the still-wet blocks are removed from the molds and placed on racks.
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Modelling, additive layer manufacturing and testing of interlocking structures for joined components.

Gonzalo Peralta Marino1,2, Stefano De la Pierre2, Milena Salvo2

  • 1Mechanical Engineering Department, Universidad Politécnica de Madrid, Madrid, Spain.

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Summary
This summary is machine-generated.

Additive layer manufacturing (ALM) creates interlocking structures to reduce stress in lap joints. This innovative approach offers an alternative to traditional joining methods, potentially eliminating post-processing steps.

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Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Manufacturing Technology

Background:

  • Lap joints are prone to stress concentration at edges, potentially leading to failure.
  • Traditional joining methods may require adhesives or post-processing, adding complexity and cost.

Purpose of the Study:

  • To investigate the use of modelling and additive layer manufacturing (ALM) for creating interlocking structures in lap joints.
  • To reduce stress concentration at the edges of lap joints using novel material designs.
  • To validate the effectiveness of ALM-produced interlocking structures through experimental testing.

Main Methods:

  • Utilizing computational modeling to design interlocking joint geometries.
  • Employing additive layer manufacturing (ALM) to fabricate components with integrated interlocking structures.
  • Conducting experimental validation to assess the stress distribution and performance of the fabricated joints.

Main Results:

  • ALM-produced interlocking structures effectively minimize stress mismatches in the joining region.
  • The developed approach demonstrates significant reduction in stress concentration compared to conventional lap joints.
  • The integrated joint design eliminates the need for separate adhesive or post-joining processes.

Conclusions:

  • Additive layer manufacturing (ALM) offers a viable and innovative method for fabricating joints with enhanced structural integrity.
  • Interlocking structures produced via ALM present a promising alternative or complement to traditional joining techniques.
  • This technology has the potential to streamline manufacturing processes and improve the durability of joined components.