Weld Bead Geometry

Weld bead geometry describes the size and shape of deposited weld metal, including bead width, height, penetration depth, and profile, and it is essential for evaluating joint strength and manufacturing quality. During welding, heat input melts the base material and filler metal, while travel speed, current, voltage, electrode angle, and shielding conditions govern molten-pool flow, solidification, and the resulting bead dimensions. Engineers measure these features through visual inspection, cross-sectional analysis, and dimensional methods to optimize process parameters, identify defects such as inadequate penetration or excessive reinforcement, and improve the reliability, consistency, and performance of welded structures.

Weld Bead Geometry - Related Videos

Research

JoVE Journal - Engineering

Automatic Laser-based Geometry Capture for Finite Element Analysis of Weld Beads

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2025

A process is described for acquiring near-real-time metrology of weld beads and prepare the resulting geometry automatically for finite element analysis.

A Paired Bead and Magnet Array for Molding Microwells with Variable Concave Geometries

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Cited by 8 •

2018

This manuscript introduces a robust method of fabricating concave microwells without the need for complex high-cost facilities. Using magnetic force, steel beads, and a through-hole array, several hundred microwells were formed in a 3 cm x 3 cm polydimethylsiloxane (PDMS) substrate.

Ultrasonic Welding of Thermoplastic Composite Coupons for Mechanical Characterization of Welded Joints through Single Lap Shear Testing

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Cited by 4 •

2016

A straightforward procedure for ultrasonic welding of thermoplastic composite coupons for basic mechanical testing is described. Key characteristics of this ultrasonic welding process are the use of flat energy directors for simplified process preparation and the use of process data for the fast definition of optimum processing conditions.

Education

JoVE Core - Chemistry

Coordination Number and Geometry

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2020

For transition metal complexes, the coordination number determines the geometry around the central metal ion. Table 1 compares coordination numbers to molecular geometry. The most common structures of the complexes in coordination compounds are octahedral, tetrahedral, and square planar. Coordination Number Molecular Geometry Example 2 linear [Ag(NH3)2]+ 3 trigonal planar [Cu(CN)3]2− 4 tetrahedral(d0 or d10), low oxidation...

Predicting Molecular Geometry

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2020

VSEPR Theory for Determination of Electron Pair Geometries The following procedure uses VSEPR theory to determine the electron pair geometries and the molecular structures: Write the Lewis structure of the molecule or polyatomic ion. Count the number of electron groups (lone pairs and bonds) around the central atom. A single, double, or triple bond counts as one region of electron density. Identify the electron-pair geometry based on the number of electron groups: linear, trigonal planar,...

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