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Related Concept Videos

Steel Fastening Techniques01:17

Steel Fastening Techniques

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Steel sections can be joined together through various fastening techniques including riveting, bolting, and welding, each suitable for different structural requirements and conditions.
Rivets are cylindrical steel fasteners with a specially designed head. During application, rivets are heated until white-hot and then inserted through pre-drilled holes in the steel sections. A pneumatic hammer is used to shape the exposed end into a second head, securing the sections together.
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In wood construction, fasteners are essential for securing components together, with the connection strength largely dependent on the direct bearing between members. Various types of fasteners are employed, each suited to specific applications and structural requirements.
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In analyzing a thin-walled hollow shaft subjected to torsional loading, a segment with width dx is isolated for examination. Despite its equilibrium state, this segment faces torsional shearing forces at its ends. These forces are quantitatively described by the product of the longitudinal shearing stress on the segment's minor surface and the area of this surface, leading to the concept of shear flow. This shear flow is consistent throughout the structure, indicating a uniform distribution...
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Fibrous joints are a type of joint where the bones are connected by fibrous connective tissue. These joints provide stability and minimal to no movement between the articulating bones. There are three types of fibrous joints.
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Generating Lap Joints Via Friction Stir Spot Welding on DP780 Steel
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Joining Strategies for Double-Sided Self-Pierce Riveting.

Rafael M Afonso1, Luís M Alves1

  • 1IDMEC, Instituto Superior Técnico, University of Lisbon, Av. Rovisco Pais, 1049-001 Lisbon, Portugal.

Materials (Basel, Switzerland)
|February 11, 2023
PubMed
Summary

Double-sided self-pierce riveting (DSSPR) offers advantages for joining dissimilar materials. Flat-bottom holes in both sheets provide precise positioning and good performance, while pre-riveting offers a viable alternative with lower energy requirements.

Keywords:
joining technologylap jointsmechanical joiningself-pierce rivetingsheets

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Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Manufacturing Processes

Background:

  • Double-sided self-pierce riveting (DSSPR) is an advanced joining technique offering advantages over traditional self-pierce riveting (SPR).
  • DSSPR is suitable for joining materials with varying thicknesses and cross-sections, crucial for complex industrial applications.

Purpose of the Study:

  • To compare different DSSPR strategies for producing mechanical joints.
  • To evaluate the performance and feasibility of various DSSPR methods for industrial adoption.

Main Methods:

  • Investigated DSSPR using flat-bottom holes in one or both sheets.
  • Analyzed DSSPR with pre-riveting techniques, with and without flat-bottom holes.
  • Conducted lap shear tests to assess destructive performance and joining integrity.

Main Results:

  • Flat-bottom holes in both sheets ensure precise rivet positioning, tightening process tolerances and maintaining high destructive performance.
  • Pre-riveting strategies yield suitable results, offering a balance between performance and reduced force/energy requirements.
  • Both strategies demonstrate feasibility for industrial application, with distinct advantages based on specific needs.

Conclusions:

  • The choice of DSSPR strategy depends on application-specific requirements for precision, performance, and resource utilization.
  • Flat-bottom holes offer superior precision and performance, whereas pre-riveting provides a more energy-efficient option.
  • This research provides essential guidance for selecting optimal DSSPR joining strategies in manufacturing.