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Article
Publication date: 17 September 2021

Lorenzo Fiorineschi, Tommaso Bacci, Francesco Saverio Saverio Frillici, Simone Cubeda, Yary Volpe, Federico Rotini, Monica Carfagni and Bruno Facchini

This paper aims to present the design of a particular non-reactive test rig for combustion swirlers and first stage turbine nozzles. The test rig is required for important…

Abstract

Purpose

This paper aims to present the design of a particular non-reactive test rig for combustion swirlers and first stage turbine nozzles. The test rig is required for important experimental activities aimed at the optimization of a specific class of gas turbines.

Design/methodology/approach

A multi-disciplinary team performed the design process by following a tailored design approach, which has been developed for the specific case. The design outcomes allowed to build a fully functional test rig to be introduced in a test cell and then to perform preliminary experiments about the fluid dynamic behaviour of the turbine elements.

Findings

The followed design approach allowed to efficiently perform the task, by supporting the information exchange among the different subjects involved in both the conceptual and the embodiment design of the test rig. Additionally, the performed experiments allowed to achieve a final configuration that makes the test rig a valuable test case for combustor-turbine interaction studies.

Research limitations/implications

The study described in this paper is focused on the design of a specific test rig, used for first validation tests. However, the achieved results (both in terms of design and test) constitutes the underpinning of the in-depth investigations to be performed in the next steps of the experimental campaign.

Originality/value

To the best of the authors’ knowledge, the present paper is the first one that comprehensively describes the design activity of an experimental test rig for turbine application, also providing indications about the specific methodological procedure used to manage the process.

Details

Journal of Engineering, Design and Technology , vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1726-0531

Keywords

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Article
Publication date: 16 August 2018

Lorenzo Fiorineschi

Learning systematic conceptual design approaches could be difficult for students who are asked to adapt their intuitive design rationale to more abstract and divergent…

Abstract

Purpose

Learning systematic conceptual design approaches could be difficult for students who are asked to adapt their intuitive design rationale to more abstract and divergent thinking styles. The purpose of this study is to propose a conceptual design approach with a well-defined reference framework and procedure to help students to gradually move toward concreteness and to explore the design space.

Design/methodology/approach

The so-called problem–solution network approach has been taken as a reference and upgraded with a specific framework to manage abstraction levels. A first didactical application of the proposal is described, and specific feedbacks from students have been collected by means of an anonymous survey.

Findings

Despite the limited course time allotted for the argument, students’ feedbacks revealed that the proposed abstraction framework is useful to learn systematic conceptual design and to support the understanding of creative design thinking.

Research limitations/implications

The proposal has been applied on a single class of MS engineering students in a course where only a part of the available time was allotted to conceptual design activities. However, the received positive feedbacks are encouraging and allow pushing toward more comprehensive applications and investigations.

Originality/value

The proposal shown in this paper uses acknowledged concepts of abstraction and function to propose a new integrated framework to manage abstraction levels in problem solving activities. The framework has been implemented in a very recent conceptual design approach based on problem–solution co-evolution, which has been proposed to overcome the flaws ascribed to classical function-based methods.

Details

Journal of Engineering, Design and Technology, vol. 16 no. 4
Type: Research Article
ISSN: 1726-0531

Keywords

Content available
Article
Publication date: 6 December 2020

Benedetto Allotta, Lorenzo Fiorineschi, Susanna Papini, Luca Pugi, Federico Rotini and Andrea Rindi

This study aims to carry out an investigation of design approaches that should be used for the design of unconventional, innovative transmission system for construction…

Abstract

Purpose

This study aims to carry out an investigation of design approaches that should be used for the design of unconventional, innovative transmission system for construction yards to privilege a smooth behaviour efficiency, and the use of innovative production techniques. Results are quite surprising, as with a proper method it is possible to demonstrate that a cycloidal drive with Wolfrom topology should be an interesting solution for the proposed application.

Design/methodology/approach

With a functional approach, also considering materials and specifications related to the investigated application, it is possible to demonstrate that possible optimal solutions should be quite different respect to the ones that can be suggested with a conventional approach. In particular for proposed applications constraints related to encumbrances, the choice of new material has led to the innovative unconventional choice of a Wolfrom cycloidal speed reducer.

Findings

Provided solution is innovative respect current state of the art for machine currently used in construction yards: in terms of adopted transmission layout; in terms of chosen materials, resulting in an innovative solution.

Research limitations/implications

Current research has strong implications on the adoption of polimeric materials for the construction of reliable transmission for harsh industrial environment as the proposed case study (concrete mixer for construction yard).

Originality/value

Proposed transmission system is absolutely original and innovative respect current state of art also considering proposed materials and consequently production methods. This is an example of transmission designed to be built with polymeric materials by optimizing chosen topology respect to chosen material.

Details

World Journal of Engineering, vol. 18 no. 2
Type: Research Article
ISSN: 1708-5284

Keywords

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Article
Publication date: 2 June 2020

Lorenzo Fiorineschi, Susanna Papini, Luca Pugi, Andrea Rindi and Federico Rotini

The purpose of this study is to identify an innovative solution for the power transmission gearbox of concrete mixers, according to the specifications provided by the company.

Abstract

Purpose

The purpose of this study is to identify an innovative solution for the power transmission gearbox of concrete mixers, according to the specifications provided by the company.

Design/methodology/approach

A tailored systematic design approach (inspired to the German systematic framework) has been adopted to comprehensively gather the company specifications and perform in-depth design space explorations. Subsequently, an iterative embodiment design approach has been followed to identify the size of the components for the preferred concept, by using acknowledged mechanical design procedures and finite element analysis tools.

Findings

An innovative cycloidal gearbox has been developed, by merging the kinematics underpinning the classical cycloidal drives and the Wolfrom planetary gearbox. The resulting concept provides high reduction rates with a very high overload capacity.

Research limitations/implications

The main limitation of the studies is the absence of in-depth evaluations usually performed in the detail design phase. However, this limitation is a direct consequence of the company specifications, which only asked to find a preferred concept and to perform preliminary evaluations. Accordingly, the subsequent design optimization are intended to be performed by the company’s staff.

Originality/value

The present paper shows an original design approach, opportunely tailored to the design of innovative gearboxes. It can be conveniently adapted and reused by designers involved in similar tasks. Moreover, the designed cycloidal gearbox paves the way for important innovations in the field of concrete mixers, allowing to design more robust and compact devices.

Details

Journal of Engineering, Design and Technology , vol. 18 no. 6
Type: Research Article
ISSN: 1726-0531

Keywords

Content available
Article
Publication date: 30 July 2021

Lorenzo Fiorineschi, Luca Pugi and Federico Rotini

The purpose of this paper is to present an alternative solution for press-fit technology processes, which could improve the precision of the positioning movements and the…

Abstract

Purpose

The purpose of this paper is to present an alternative solution for press-fit technology processes, which could improve the precision of the positioning movements and the stiffness of the structural elements.

Design/methodology/approach

A concept is presented and the related kinematics is described. Then, preliminary embodiment evaluations have been performed in terms of kinematics, force control and load distribution on the main structural elements.

Findings

Thanks to the additional leg, the proposed solution allows a preload that is capable of compensating the backlash of joints. The particular structure with four extendible legs and eight cardan joints ensures the parallelism between the ground and the plate holding the end effector, without any need of additional controls. However, it implies that the legs are not subjected to pure tension–compression stresses.

Research limitations/implications

This work is focused on the conceptual phase of the design process, with only preliminary embodiment analysis that paves the way for subsequent and more detailed design steps. Especially concerning the actual stiffness of the system, comprehensive evaluations could be performed only after the identification of the particular parts/devices used to implement the main functional elements.

Originality/value

To the best of the authors’ knowledge, this is the first research work that comprehensively describes and analyzes the considered kinematics, within a real industrial application context.

Details

World Journal of Engineering, vol. ahead-of-print no. ahead-of-print
Type: Research Article
ISSN: 1708-5284

Keywords

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Article
Publication date: 29 May 2018

Lorenzo Fiorineschi, Francesco Saverio Frillici, Giovanni Gregori and Federico Rotini

This paper aims to provide suggestions for the identification of potential new applications for the existing products and/or technologies.

Abstract

Purpose

This paper aims to provide suggestions for the identification of potential new applications for the existing products and/or technologies.

Design/methodology/approach

A nine-step method has been developed for extracting information about a product or technology, processing the international patent database (IPD) and extracting useful hints for potential new applications. An academic case study has been used to perform the first application of the proposal.

Findings

A novel approach for processing IPD aimed at supporting the identification of new opportunities for exploiting existing products/technologies. The case study application shows that the proposal allows to extract potentially useful and non-obvious suggestions for new product applications.

Research limitations/implications

Although some limits inevitably affect this preliminary version of the proposal, important hints for future developments have been inferred for a more comprehensive exploitation of both the firm internal knowledge and the suggestions provided by the international patent database.

Practical implications

The achieved results can support firms in expanding market opportunities for their products or technologies.

Originality/value

The proposed approach offers a new structured path for stimulating idea generation for new product applications, by exploiting product information and the cooperative patent classification.

Details

International Journal of Innovation Science, vol. 10 no. 4
Type: Research Article
ISSN: 1757-2223

Keywords

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Article
Publication date: 12 October 2018

Monica Carfagni, Lorenzo Fiorineschi, Rocco Furferi, Lapo Governi and Federico Rotini

This paper aims to argue about the involvement of additive technologies (ATs) in the prototyping issues of designing. More precisely, it reviews the literature…

Abstract

Purpose

This paper aims to argue about the involvement of additive technologies (ATs) in the prototyping issues of designing. More precisely, it reviews the literature contributions focused on the different perspectives of prototyping activities for design purposes, searching for both available knowledge and research needs concerning the correct exploitation of ATs.

Design/methodology/approach

A two-step literature review has been performed. In the first step, general information has been retrieved about prototyping issues related to design. In the second step, the literature searches were focused on retrieving more detailed information about ATs, concerning each of the main issues identified in the previous step. Extracted information has been analyzed and discussed for understanding the actual coverage of the arguments and for identifying possible research needs.

Findings

Four generally valid prototyping issues have been identified in the first step of the literature review. For each of them, available information and current lacks have been identified and discussed about the involvement of AT, allowing to extract six different research hints for future works.

Originality/value

This is the first literature review concerning AT-focused contributions that cover the complex and inter-disciplinary issues characterizing prototyping activities in design contexts.

Details

Rapid Prototyping Journal, vol. 24 no. 7
Type: Research Article
ISSN: 1355-2546

Keywords

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Article
Publication date: 18 March 2014

Lorenzo Fiorineschi, Paolo Rissone and Federico Rotini

This paper argues the relationship between modularity and product innovation. The work is based on the assumption that in order to become an innovation, a novel product…

Abstract

This paper argues the relationship between modularity and product innovation. The work is based on the assumption that in order to become an innovation, a novel product has to be successfully diffused into the marketplace. Modularity can give rise to a series of parameters related to commercial success; however, there is not a well-defined relationship between modularity and product innovativeness. The aim of the paper is to analyse the logic of the most acknowledged modularization methods in-order to understand how they can really influence product success, and then, part of product innovativeness.

Details

International Journal of Innovation Science, vol. 6 no. 1
Type: Research Article
ISSN: 1757-2223

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