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Article
Publication date: 29 April 2021

Felice Rubino, Giacomo Canale and Prabhakar Sathujoda

Electron-beam welding has been widely used in industry to join different titanium alloys (Ti-6Al-4V) components. During welding production defects, such as porosity, lack of…

Abstract

Purpose

Electron-beam welding has been widely used in industry to join different titanium alloys (Ti-6Al-4V) components. During welding production defects, such as porosity, lack of penetration or thinning are often observed. High-cycle fatigue (HCF) tests have been performed on welded specimens to understand the effect of weld defects on fatigue capabilities. The fatigue life of different types of “defective” welds has been compared against a non-welded reference specimen.

Design/methodology/approach

The results of the experimental campaign have been correlated with finite elements models.

Findings

It is concluded the geometry produced by the weld process, e.g. toe radius and under-bead shape, and the related stress raisers play a relevant role on fatigue capabilities of welds. This conclusion is valid only for a Ti-6Al-4V T-joint weld and only for flaw initiation. Knock down in materials properties has not been considered.

Originality/value

There is a lack of HCF fatigue data for welds of this geometry and material in the open literature. The paper is of relevance for industrial application and practical interest, although a lot more validation tests are required to draw a final conclusion.

Details

Multidiscipline Modeling in Materials and Structures, vol. 17 no. 4
Type: Research Article
ISSN: 1573-6105

Keywords

Article
Publication date: 17 September 2021

Wang Zhizhong, Han Chao, Guosheng Huang, Han Bin and Han Bin

The deposition of particles onto a substrate during the cold spraying (CS) process relies on severe plastic deformation, so there are various micro-defects induced by insufficient…

Abstract

Purpose

The deposition of particles onto a substrate during the cold spraying (CS) process relies on severe plastic deformation, so there are various micro-defects induced by insufficient deformation and severe crushing. To solve the problems, many post-treat techniques have been used to improving the quality by eliminating the micro-defects. This paper aims to help scholars and engineers in this field a better and systematic understand of CS technology by summarizing the post-treatment technologies that have been investigated recently years.

Design/methodology/approach

This review summarizes the types of micro-defects and introduces the effect of micro-defects on the properties of CS coating/additive manufactured, illustrates the post-treatment technologies and its effect on the microstructure and performances, and finally outlooks the future development trends of post-treatments for CS.

Findings

There are significant discoveries in post-treatment technology to change the performance of cold spray deposits. There are also many limitations for post-treatment methods, including improved performance and limitations of use. Thus, there is still a strong requirement for further improvement. Hybrid post-treatment may be a more ideal method, as it can eliminate more defects than a single method. The proposed ultrasonic impact treatment could be an alternative method, as it can densify and flatten the CS deposits.

Originality/value

It is the first time to reveal the influence factors on the performances of CS deposits from the perspective of microdefects, and proposed corresponding well targeted post-treatment methods, which is more instructive for improving the performances of CS deposits.

Details

Rapid Prototyping Journal, vol. 28 no. 2
Type: Research Article
ISSN: 1355-2546

Keywords

Article
Publication date: 11 May 2020

Antonio Salvi, Filippo Vitolla, Nicola Raimo, Michele Rubino and Felice Petruzzella

The purpose of this study is to examine the impact of intellectual capital disclosure on the cost of equity capital in the context of integrated reporting, which represents the…

1485

Abstract

Purpose

The purpose of this study is to examine the impact of intellectual capital disclosure on the cost of equity capital in the context of integrated reporting, which represents the ultimate frontier in the field of corporate disclosure.

Design/methodology/approach

The authors employ content analysis to measure intellectual capital disclosure levels along with a panel analysis on a sample of 164 integrated reports.

Findings

Empirical outcomes indicate that intellectual capital disclosure levels have a significantly negative association with the cost of equity capital.

Originality/value

This study's major contribution lies in its originality in terms of empirical examination of the relationship between intellectual capital disclosure in integrated reports and the cost of equity capital.

Details

Journal of Intellectual Capital, vol. 21 no. 6
Type: Research Article
ISSN: 1469-1930

Keywords

Article
Publication date: 29 October 2019

Giacomo Canale, Moustafa Kinawy, Prabhakar Sathujoda, Angelo Maligno and Roberto Guglielmo Citarella

When a thick structure is, on the contrary, subjected to moisture absorption, a fairly long time may be needed to reach full saturation. It is, therefore, important to understand…

Abstract

Purpose

When a thick structure is, on the contrary, subjected to moisture absorption, a fairly long time may be needed to reach full saturation. It is, therefore, important to understand and predict the areas of complex composite structures that are more prone to saturation. The material knock-down factors (proportional to the moisture content) may be applied only to these zones, in order to obtain a less pessimistic structural response prediction. The purpose of this paper is to investigate an FE diffusion model that was used to validate the absorption testing results of thick carbon epoxy laminates.

Design/methodology/approach

The experimental results were validated by using a diffusion model in Abaqus FE code.

Findings

The absorption results of three 15 mm thick carbon epoxy laminates are presented and reproduced via a mass diffusion model. The laminates were conditioned at 70°C and 85 per cent relative humidity in a moisture chamber. Areas more prone to saturation have been predicted by the FE model and the moisture content in the non-saturated areas has been calculated.

Practical implications

The practical implications of the absorption model are discussed on an example of an aero-engine fan blade-like structure.

Originality/value

Validation of thick panels’ absorption data is an important point of novelty of this paper, given the lack of experimental and modelling validation in the open literature.

Details

Multidiscipline Modeling in Materials and Structures, vol. 16 no. 3
Type: Research Article
ISSN: 1573-6105

Keywords

Article
Publication date: 5 October 2022

Antonio Salvi, Felice Petruzzella, Nicola Raimo and Filippo Vitolla

Digitalization is an element capable of improving companies’ financial performance. Despite the relevance of the topic, the financial effects associated with extensive…

Abstract

Purpose

Digitalization is an element capable of improving companies’ financial performance. Despite the relevance of the topic, the financial effects associated with extensive transparency in digitalization choices have rarely been explored in extant literature. This study aims to close this important gap by examining the effect of digitalization-related information on the cost of equity capital.

Design/methodology/approach

This study uses manual content analysis on a sample of 122 international listed firms to measure the level of transparency in digitalization choices and a regression model to test the effect of this transparency on the cost of equity capital.

Findings

The results show that broad transparency allows firms to benefit from a lower cost of equity capital. From this perspective, disseminating information about digitalization choices in a signaling theory key represents the signal that companies send to investors.

Originality/value

This study extends the knowledge about the potential of transparency to facilitate access to finance by examining the effect of another type of information, namely, those relating to digitalization choices, on the cost of equity capital.

Details

Qualitative Research in Financial Markets, vol. 15 no. 4
Type: Research Article
ISSN: 1755-4179

Keywords

Article
Publication date: 27 July 2021

Antonio Salvi, Nicola Raimo, Felice Petruzzella and Filippo Vitolla

The purpose of this paper is to analyse the financial consequences of the level of human capital (HC) information disclosed by firms through integrated reports. Specifically, this…

1029

Abstract

Purpose

The purpose of this paper is to analyse the financial consequences of the level of human capital (HC) information disclosed by firms through integrated reports. Specifically, this work examines the effect of HC information on the cost of capital and firm value.

Design/methodology/approach

A manual content analysis is used to measure the level of HC information contained in integrated reports. A fixed-effects regression model is used to analyse 375 observations (a balanced panel of 125 firms for the period 2017–2019) and test the financial consequences of HC disclosure.

Findings

The empirical outcomes indicate that HC disclosure has a significant and negative effect on the cost of capital and a positive impact on firm value. Our results show that companies can reduce investors' perceived firm risk by improving HC disclosure, leading to a lower cost of capital. Moreover, our findings support the notion that increased levels of HC disclosure are linked to firms' improved access to external financial resources, consequently enhancing firm value.

Originality/value

This study is the first contribution to examine the financial consequences of HC disclosure and is one of the first to examine the level of HC information within integrated reports.

Details

Journal of Intellectual Capital, vol. 23 no. 6
Type: Research Article
ISSN: 1469-1930

Keywords

Article
Publication date: 2 July 2020

Nicola Raimo, Elbano de Nuccio, Anastasia Giakoumelou, Felice Petruzzella and Filippo Vitolla

This study examines the effect that environmental, social and governance (ESG) disclosure generates on the cost of equity capital in the food and beverage (F&B) sector.

2939

Abstract

Purpose

This study examines the effect that environmental, social and governance (ESG) disclosure generates on the cost of equity capital in the food and beverage (F&B) sector.

Design/methodology/approach

This study analyses a sample of 171 international listed firms pertaining to the F&B sector and headquartered in North America, Western Europe and Asia Pacific (developed), forming an unbalanced panel of 1,316 observations, spanning the period 2010–2019. We run a fixed-effects panel regression model to test the relationship between ESG disclosure and the cost of equity capital.

Findings

Our empirical outcomes suggest a significant negative relationship between ESG disclosure and the cost of equity capital. We find support for the notion that increased levels of ESG disclosure are linked to an improved access to financial resources for firms.

Originality/value

This is the first study that analyses the impact of ESG disclosure on the cost of equity capital in the F&B sector, taking existing literature a step further into more detailed and specific aspects of the relationship of focus.

Details

British Food Journal, vol. 123 no. 1
Type: Research Article
ISSN: 0007-070X

Keywords

Article
Publication date: 17 January 2022

Antonio Salvi, Nicola Raimo, Felice Petruzzella and Filippo Vitolla

In recent years, crowdfunding is assuming an increasingly central role in the development of business projects as an alternative financing tool to traditional sources. This study…

Abstract

Purpose

In recent years, crowdfunding is assuming an increasingly central role in the development of business projects as an alternative financing tool to traditional sources. This study analyses the role of communication in the success of crowdfunding campaigns in the restaurant sector in the European context.

Design/methodology/approach

This study conducts a regression analysis on a sample of 442 European restaurant crowdfunding projects launched on the Kickstarter platform in a time period spanning from 2014 to 2021. More specifically, this study uses a logistic regression model to test the impact of communication on the success of restaurant crowdfunding projects.

Findings

Empirical results suggest a strong impact of communication, declined in its different forms, on the success of restaurant crowdfunding campaigns. More specifically, they highlight a positive impact of the number of images, number of videos, readability and community orientation of the project description, number of comments and number of updates on the success of restaurant crowdfunding projects.

Originality/value

To the best of the authors’ knowledge, this study represents the first research that examines the effect of the communication on the success of restaurant crowdfunding projects conducted in the European context.

Details

British Food Journal, vol. 124 no. 12
Type: Research Article
ISSN: 0007-070X

Keywords

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