Microscale Damage Evolution and Failure Behavior of Metal–Composite Friction Spot Joints: Modelling and Experimental Analyses

Natalia M. André; Renan Pereira Alessio; Jorge F.  dos Santos; S. T. Amancio-Filho

doi:10.3390/met12122080

Microscale Damage Evolution and Failure Behavior of Metal–Composite Friction Spot Joints: Modelling and Experimental Analyses

Natalia M. André, Renan Pereira Alessio, Jorge F. dos Santos, S. T. Amancio-Filho^*

^*Corresponding author for this work

Institute of Materials Science, Joining and Forming (3030)

Research output: Contribution to journal › Article › peer-review

Abstract

This study aimed to understand the damage evolution at the interface of AA2024-T3/CF-PPS friction spot joints. For this purpose, the finite element method was applied and the bonding zones of the joints were discretized based on a traction–separation law. It was observed that the damage had initiated at the AZ (adhesion zone) and then propagated as a symmetric linear front from the edges towards the center of the joined area. Nevertheless, as the damage advanced inside the PDZ (plastically deformed zone), its propagation became an asymmetrical linear front that evolved preferably from the free edge of the composite part due to the higher peeling stresses in this region (asymmetrical secondary bending of the structure). Based on the findings of this study, modifications are
proposed to the failure theory previously stated for friction spot joints.

Original language	English
Article number	2080
Number of pages	21
Journal	Metals
Volume	12
Issue number	12
DOIs	https://doi.org/10.3390/met12122080
Publication status	Published - 4 Dec 2022

Keywords

aluminum
carbon fiber-reinforced polymer (CFRP)
modelling
damage evolution
plastic deformation
cohesive surfaces

Fields of Expertise

Advanced Materials Science

Access to Document

10.3390/met12122080Licence: CC BY 4.0

PILOT - Endowed Professorship for Aviation
Amancio, S. T.
1/03/18 → 28/02/23
Project: Research project

Cite this

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title = "Microscale Damage Evolution and Failure Behavior of Metal–Composite Friction Spot Joints: Modelling and Experimental Analyses",

abstract = "This study aimed to understand the damage evolution at the interface of AA2024-T3/CF-PPS friction spot joints. For this purpose, the finite element method was applied and the bonding zones of the joints were discretized based on a traction–separation law. It was observed that the damage had initiated at the AZ (adhesion zone) and then propagated as a symmetric linear front from the edges towards the center of the joined area. Nevertheless, as the damage advanced inside the PDZ (plastically deformed zone), its propagation became an asymmetrical linear front that evolved preferably from the free edge of the composite part due to the higher peeling stresses in this region (asymmetrical secondary bending of the structure). Based on the findings of this study, modifications are proposed to the failure theory previously stated for friction spot joints. ",

keywords = "aluminum, carbon fiber-reinforced polymer (CFRP), modelling, damage evolution, plastic deformation, cohesive surfaces",

author = "Andr{\'e}, {Natalia M.} and {Pereira Alessio}, Renan and {dos Santos}, {Jorge F.} and Amancio-Filho, {S. T.}",

year = "2022",

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doi = "10.3390/met12122080",

language = "English",

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T1 - Microscale Damage Evolution and Failure Behavior of Metal–Composite Friction Spot Joints: Modelling and Experimental Analyses

AU - André, Natalia M.

AU - Pereira Alessio, Renan

AU - dos Santos, Jorge F.

AU - Amancio-Filho, S. T.

PY - 2022/12/4

Y1 - 2022/12/4

N2 - This study aimed to understand the damage evolution at the interface of AA2024-T3/CF-PPS friction spot joints. For this purpose, the finite element method was applied and the bonding zones of the joints were discretized based on a traction–separation law. It was observed that the damage had initiated at the AZ (adhesion zone) and then propagated as a symmetric linear front from the edges towards the center of the joined area. Nevertheless, as the damage advanced inside the PDZ (plastically deformed zone), its propagation became an asymmetrical linear front that evolved preferably from the free edge of the composite part due to the higher peeling stresses in this region (asymmetrical secondary bending of the structure). Based on the findings of this study, modifications are proposed to the failure theory previously stated for friction spot joints.

AB - This study aimed to understand the damage evolution at the interface of AA2024-T3/CF-PPS friction spot joints. For this purpose, the finite element method was applied and the bonding zones of the joints were discretized based on a traction–separation law. It was observed that the damage had initiated at the AZ (adhesion zone) and then propagated as a symmetric linear front from the edges towards the center of the joined area. Nevertheless, as the damage advanced inside the PDZ (plastically deformed zone), its propagation became an asymmetrical linear front that evolved preferably from the free edge of the composite part due to the higher peeling stresses in this region (asymmetrical secondary bending of the structure). Based on the findings of this study, modifications are proposed to the failure theory previously stated for friction spot joints.

KW - aluminum

KW - carbon fiber-reinforced polymer (CFRP)

KW - modelling

KW - damage evolution

KW - plastic deformation

KW - cohesive surfaces

U2 - 10.3390/met12122080

DO - 10.3390/met12122080

M3 - Article

SN - 2075-4701

VL - 12

JO - Metals

JF - Metals

IS - 12

M1 - 2080

ER -

Microscale Damage Evolution and Failure Behavior of Metal–Composite Friction Spot Joints: Modelling and Experimental Analyses

Abstract

Keywords

Fields of Expertise

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Projects

PILOT - Endowed Professorship for Aviation

Cite this