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Americo Scotti

Gästprofessor

Staff member at Division of Welding Technology.

Conducts research in engineering and technology, production technology.


Research area/Research interest

My main field of interest is Arc Welding Processes. I work from the basics (arc physics) to the end-use (process automation and parametric optimization). My research approach is experimental work, with application of instrumentation and statistics. I have imposed lately a great effort on heat input measurement by calorimetry and fume and gas emission from arc welding processes. As related to welding process application, I have devoted study time on experimental mitigation and determination methods of distortion and residual stresses. The latest subject of interest has been Arc Welding Additive Manufacturing.

Teaching/Supervision

I have been teaching for more than 30 years Welding Technology (arc welding processes, arc physics, distortion and residual stress, health and safety, quality assurance, instrumentation applied to weld, weldability of steels, cracking, etc.

) at different levels, such us for undergraduate, graduate (master and doctorate degree), and for International Welding Engineering courses. I have supervised tens of students (master and doctorate level) on welding technology.

Keywords

Welding Process; Instrumentation; Experimental Arc Physics; Distortion and Residual Stress; Quality Assurance.

Publications


A contribution to the study of negative polarity in GMA welding

Published

A contribution to the study of negative polarity in GMA welding

GMAW using the electrode with negative polarity (DCEN) has been frequently suggested as a potential means of increasing production capacity. The...

A critical analysis of weld heat input measurement through a water-cooled stationary anode calorimeter

Published

A critical analysis of weld heat input measurement through a water-cooled stationary anode calorimeter

A comprehensive model on heat transfer in welded plates is able to calculate the amount of heat losses from the surfaces. A model demands as input...

A critical analysis of weld heat input measurement through a water-cooled stationary anode calorimeter

Published

A critical analysis of weld heat input measurement through a water-cooled stationary anode calorimeter

Comprehensive models of heat transfer require specification of the total amount of heat received by the workpiece. The objective of this work was t...

Active power measurement in arc welding and its role in heat transfer to the plate

Published

Active power measurement in arc welding and its role in heat transfer to the plate

A contemporary paper claimed that a method using the resistance of impedance (active power) for arc power calculation is more accurate than the...

Analysis of residual stresses resulting from the surface preparation for X-ray diffraction measurement

Published

Analysis of residual stresses resulting from the surface preparation for X-ray diffraction measurement

There is no consensus in the literature on the need to remove preprocessing layers from the material prior to the measurement of residual stresses ...

Appraisal of fiber-metal laminate panels reinforced with metal pins deposited by CMT welding

Published

Appraisal of fiber-metal laminate panels reinforced with metal pins deposited by CMT welding

Avaliação da Aplicação de um Atlas de Soldagem de um Aço Bainítico Microligado ao Nióbio : Application Assessment of a Welding Atlas of a Niobium Microalloyed Bainitic Steel

Published

Avaliação da Aplicação de um Atlas de Soldagem de um Aço Bainítico Microligado ao Nióbio : Application Assessment of a Welding Atlas of a Niobium Microalloyed Bainitic Steel

Os aços de alta resistência microligados ao nióbio têm mostrado ser uma boa opção para fabricação de perfis estruturais, utilizando os conceitos já...

Balancing WAAM Production Costs and Wall Surface Quality through Parameter Selection : A Case Study of an Al-Mg5 Alloy Multilayer-Non-Oscillated Single Pass Wall

Published

Balancing WAAM Production Costs and Wall Surface Quality through Parameter Selection : A Case Study of an Al-Mg5 Alloy Multilayer-Non-Oscillated Single Pass Wall

The purpose of the study was to propose a strategy to assess the potential reduction of the production cost during wire+arc additive manufacturing...

Comparison of methods to correlate input parameters with depth of penetration in LASER welding

Published

Comparison of methods to correlate input parameters with depth of penetration in LASER welding

Despite the industrial relevance of LASER welding, determination of sustainable parameterization is still a challenge. Trial and error, or even not...

Development and Evaluation of Wire Feeding Pulsing Techniques for Arc Welding : Desenvolvimento e Avaliação de Técnicas para Pulsação da Alimentação de Arame em Soldagem a Arco

Published

Development and Evaluation of Wire Feeding Pulsing Techniques for Arc Welding : Desenvolvimento e Avaliação de Técnicas para Pulsação da Alimentação de Arame em Soldagem a Arco

Applying pulsed wire feeding techniques is one of the new approaches for welding, such as for GTAW and GMAW. However, these techniques invariably...

Fiber-metal laminate panels reinforced with metal pins

Published

Fiber-metal laminate panels reinforced with metal pins

Fiber-metal laminates (FMLs) are key to modern composite structures and metal-compositecoupling is crucial to improve their effectiveness. Cold-met...

Influence of the CO2 Content on Operational Performance of Short-Circuit GMAW

Published

Influence of the CO2 Content on Operational Performance of Short-Circuit GMAW

CO2 blended with Ar is the most common shielding gas used for short-circuit GMAW. There has been some technical knowledge devised from the process...

Operational behavior of the switchback GMAW process using a mechanized rig for arc movement

Published

Operational behavior of the switchback GMAW process using a mechanized rig for arc movement

Switchback Gas Metal Arc Welding (GMAW) consists of a forward and backward periodic oscillation of the welding torch in the longitudinal direction ...

Residual Stresses in Arc Welding : A Holistic Vision

Published

Residual Stresses in Arc Welding : A Holistic Vision

There are several examples in current literature where assumptions regarding residual stresses are made, yet rarely confirmed in practice. To...