Effects of the Pipelines External Coating Technology Selection in the Definition of the Pipeline Design Strategy

2019 ◽  
Author(s):  
Tommaso Mantegazza ◽  
Francesco Negro ◽  
Eric Gildemyn ◽  
Marco Savazzi ◽  
Jude Esangbedo ◽  
...  
Keyword(s):  
Design Strategy ◽  
Technology Selection ◽  
Coating Technology ◽  
Definition Of ◽  
Pipeline Design ◽  
External Coating

scholarly journals Mechanical Properties of a 3D Printed Wall Segment Made with an Earthen Mixture

2021 ◽  
Author(s):  
Elena Ferretti ◽  
Massimo Moretti ◽  
Alberto Chiusoli ◽  
Lapo Naldoni ◽  
Francesco De Fabritiis ◽  
...  
Keyword(s):  
Construction Material ◽  
Volumetric Strain ◽  
Structural Function ◽  
Uniaxial Compression Test ◽  
Load Bearing ◽  
3D Printed ◽  
The Stability ◽  
Definition Of ◽  
External Coating

This paper is part of the research on 3D printing of earthen housing modules, made with earth taken in situ. Previous studies have already led to the definition of 3D printed earthen elements for the external cladding of single-story wooden load-bearing structures. With this work, we intend to take a step forward in the use of 3D printed earthen elements, studying their load-bearing capacity for vertical loads. The goal is to create load-bearing structures entirely in earth, with two or more floors. To this end, the present work investigates two of the major presumed criticalities of 3D printed elements under vertical load, namely the detachments due to poor cohesion between extruded layers and the detachments between internal infill and external coating. The uniaxial compression test on a specially 3D printed wall segment did not actually show any particular danger for the stability of the structure, due to detachment phenomena. Rather, the experimental results showed some quite anomalous mechanical behaviors for a brittle construction material (studied at the mesoscale), especially as regards Poisson’s modulus and volumetric strain. The main experimental finding concerns the contribution of the internal infill, which seems to have a structural function and not just a filling function.

scholarly journals Research on coating technology with wet-process sprayed mortar: waste and productivity

2020 ◽  
Vol 27 (3) ◽  
Author(s):  
Denise Ribeiro ◽  
Gabriela Alves Tenório de Morais ◽  
Alberto Casado Lordsleem Júnior
Keyword(s):  
Decision Making ◽  
Labor Productivity ◽  
Coating Technology ◽  
Detailed Measurement ◽  
Wet Process ◽  
External Coating ◽  
Construction Works

Abstract The mechanical application of mortar is as an adequate solution to minimize the problems in the execution of internal and external coating of the buildings. However, few scientific studies address the gains in efficiency afforded by mechanization as well as the scarce parameters of waste, productivity and quality that could contribute to choosing this technology. This article aims to characterize the presented constructive technology and to investigate the waste of mortar (percentage of losses and consumption) and the productivity of the labor in the execution of internal and external coating for sealing in the application of wet-process sprayed mortar. Investigations were carried out in 08 construction works, which presented results of up to 150% and 0.18h/m2 for, respectively, loss of industrialized mortar and labor productivity. Thus, the present research contributes to the advancement of the knowledge about the wet-process sprayed mortar by increasing the understanding of the technology. Other important contributions are the indicators of losses and productivity and their detailed measurement, which are efficient tools to assist the companies in the decision-making by adopting this technology as well as in the management of the activities during the execution process.

scholarly journals Optimal Design of Submarine Pipelines by a Genetic Algorithm with Embedded On-Bottom Stability Criteria

2018 ◽  
Vol 2018 ◽  
pp. 1-21 ◽  
Author(s):  
Juliana Souza Baioco ◽  
Mauro Henrique Alves de Lima ◽  
Carl Horst Albrecht ◽  
Beatriz Souza Leite Pires de Lima ◽  
Breno Pinheiro Jacob ◽  
...  
Keyword(s):  
Design Methodology ◽  
Visual Inspection ◽  
Stability Criteria ◽  
Submarine Pipeline ◽  
Computational Tool ◽  
Design Time ◽  
The Stability ◽  
Definition Of ◽  
Seabed Bathymetry ◽  
Pipeline Design

This work describes a computational tool, based on an evolutionary algorithm, for the synthesis and optimization of submarine pipeline routes considering the incorporation of on-bottom stability criteria (OBS). This comprises a breakthrough in the traditional pipeline design methodology, where the definition of a route and the stability calculations had been performed independently: firstly, the route is defined according to geographical-topographical issues (including manual/visual inspection of seabed bathymetry and obstacles); afterwards, stability is verified, and mitigating procedures (such as ballast weight) are specified. This might require several design spirals until a final configuration is reached, or (most commonly) has led to excessive costs for the mitigation of instability problems. The optimization tool evaluates each candidate route by incorporating, as soft and hard constraints, several criteria usually considered in the manual design (pipeline length, bathymetry data, obstacles); also, with the incorporation of OBS criteria into the objective function, stability becomes an integral part of the optimization process, simultaneously handling minimization of length and cost of mitigating procedures. Case studies representative of actual applications are presented. The results show that OBS criteria significantly influences the best route, indicating that the tool can reduce the design time of a pipeline and minimize installation/operational costs.

Monsanto GeoHotel Escola

2020 ◽  
pp. 265-276
Author(s):  
Ana Rita Baptista Garcia ◽  
Sara Brito Filipe
Keyword(s):  
Local Government ◽  
Design Process ◽  
Design Thinking ◽  
Design Strategy ◽  
Concept Identification ◽  
Multidisciplinary Teams ◽  
Team Members ◽  
Implementation Phase ◽  
Definition Of

This research analyses the design process in the creation of Monsanto GeoHotel Escola (MGHE). The problem that underlies the study is the definition of the concept; identification of the actors who participated in the construction; the role of the academy, local government, and other partners; and the design strategy adopted. Methodologically, the authors triangulated documentary data with direct observation and interviewing the various team members as well as the heads of the partner institutions. They conclude that design thinking has proven to be an effective process to meet new needs. MGHE has adopted this method or process through multidisciplinary teams and focused on the needs of consumers: tourists, students of the Hospitality course. The active participation of consumers, from the partners involved in the process, from the inspiration phase to the ideation phase, including the implementation phase, ensured/ensures the necessary dynamics for the competitiveness of hotel equipment.

scholarly journals Technical Viability Analysis of Industrial Synergies—An Applied Framework Perspective

2020 ◽  
Vol 12 (18) ◽  
pp. 7720
Author(s):  
Rui Dias ◽  
João Azevedo ◽  
Inês Ferreira ◽  
Marco Estrela ◽  
Juan Henriques ◽  
...  
Keyword(s):  
Decision Making ◽  
Methodological Approach ◽  
Technology Selection ◽  
Industrial Symbiosis ◽  
Viability Assessment ◽  
Viability Analysis ◽  
Support Tools ◽  
Technical Validation ◽  
Definition Of ◽  
Support Decision Making

To foster the implementation of Industrial Symbiosis, several support tools have been developed to facilitate the dissemination of Industrial Symbiosis (IS) and the engagement of stakeholders; the establishment of exchanges between companies, the so-called synergies; and the assessment of impacts and benefits. Despite this, it has been found that stakeholders still do not have a clear envisioning of the required steps to the technical implementation of synergies and there are no facilitating tools, such as methodologies, frameworks, modelling tools, and databases, among others, that aid to technically support decision-making of synergy implementation. Thus, the goal of this paper is to present a dedicated framework that provides a set of guidelines and defines a technical viability analysis to support the implementation of potential synergies, which can be used and replicated by any IS practitioner. It comprehends a methodological approach to assess the compliance of a given synergy opportunity; its characterization concerning the definition of the necessary intermediary steps for the technical implementation; and an assessment of the technical feasibility of the synergy. The implementation of the framework allowed the successful technical validation of the studied synergy opportunities, providing a final technical viability assessment that can support decision-making of technology selection and synergy implementation.

scholarly journals A GIS-Based Multicriteria Assessment for Identification of Positive Energy Districts Boundary in Cities

Energies ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 7517
Author(s):  
Beril Alpagut ◽  
Arantza Lopez Romo ◽  
Patxi Hernández ◽  
Oya Tabanoğlu ◽  
Nekane Hermoso Martinez
Keyword(s):  
Urban Design ◽  
Land Use Planning ◽  
Selection Process ◽  
Assessment Method ◽  
Technology Selection ◽  
Positive Energy ◽  
European Cities ◽  
Macro Scale ◽  
Multicriteria Assessment ◽  
Definition Of

Discussions regarding the definition of Positive Energy Districts and the concept of a boundary are still being actively held. Even though there are certain initiatives working on the boundary limitations for PEDs, there is no methodology or tool developed for selecting peculiar spaces for future PED implementations. The paper focuses on a flexible GIS-based Multicriteria assessment method that identifies the most suitable areas to reach an annual positive non-renewable energy balance. For that purpose, a GIS-based tool is developed to indicate the boundary from an energy perspective harmonized with urban design and land-use planning. The method emphasizes evaluation through economic, social, political, legal, environmental, and technical criteria, and the results present the suitability of areas at macro and micro scales. The current study outlines macro-scale analyses in six European cities that represent Follower Cities under the MAKING-CITY H2020 project. Further research will be conducted for micro-scale analyses and the outcomes will pursue a technology selection process.

Open Rotor Design Strategy: From Wind Tunnel Tests to Full Scale Multi-Disciplinary Design

2015 ◽  
Author(s):  
Jonathan Vlastuin ◽  
Clément Dejeu ◽  
Anthony Louet ◽  
Jérôme Talbotec ◽  
Ingrid Lepot ◽  
...  
Keyword(s):  
Wind Tunnel ◽  
High Speed ◽  
Design Methodology ◽  
Wind Tunnel Test ◽  
Design Strategy ◽  
Design Guidelines ◽  
Full Scale ◽  
Wind Tunnel Tests ◽  
Open Rotor ◽  
Definition Of

For several years, Safran has been involved in the design and optimization of contra rotating open rotors. This innovative architecture is known for allowing drastic reduction in fuel burn, but its development is facing complex technological challenges such as acoustics, aerodynamics, and weight penalty due to the mechanical complexity of an Open Rotor. Since 2010, Safran has been developing the experimental test bench HERA (1/5 mock-up scale) to improve the understanding of the complex aerodynamics and acoustics phenomena involved in the counter rotating propellers configuration. Isolated and installed low speed and high speed wind tunnel campaigns, including PIV measurements have been extremely helpful in defining design guidelines for full scale open rotor specification. These tests have been used as CFD feed-back among other purposes. An iterative process involving CFD optimization (in close collaboration with Cenaero) and wind tunnel test campaigns has been developed over the last 4 years and has led to the definition of an innovative design strategy, which has been successfully tested during the process of the full scale counter rotating propellers design for the SAGE2 ground test demonstrator engine. This phase has evidenced the absolute necessity of a multi-disciplinary design method when it comes to full scale and “rig-ready” design. Ensuring high propulsive efficiency and at the same time, minimizing the acoustic level, while maintaining severe mechanical constraints such as weight, inertia and proper dynamic positioning under control, requires a dedicated and integrated “all inclusive” design process. The aim of this paper is to present the design methodology and some of the wind tunnel tests results carried out over the last 4 years, which have led to the definition of a novel multidisciplinary design methodology that involves CFD, FEM and acoustics.

scholarly journals Defining the Participatory Aspect in Health and Dementia Care Research

2020 ◽  
Vol 4 (Supplement_1) ◽  
pp. 789-789
Author(s):  
Martina Roes
Keyword(s):  
Participatory Research ◽  
Public Involvement ◽  
Meta Analysis ◽  
Health Care Research ◽  
Design Strategy ◽  
Care Research ◽  
People With Dementia ◽  
Literature Reviews ◽  
Definition Of ◽  
Participation In Research

Abstract In the last decade, the terms ’engagement’, ‘involvement’, ‘patient-public involvement (PPI)’ and/or ‘participatory research’ have been increasingly used in literature. However, it seems that each author has their own definition of the terms and there is not consensus on what constitutes engagement, involvement or participation in health care research. In a broad sense, it seems that PPI can be understood as a co-design strategy, but the terms are not used consistently. Definitions of participation in research tend toward describing the methodological aspect of research rather than mapping appropriate use of methods. Representation of the diversity of society is also challenging and involvement of people with dementia is often neglected. To improve participatory research and outcomes, it is valuable to understand applied methods. Therefore, we conducted a meta-analysis of literature reviews that analyzed methodological concepts and application of these participatory concepts. This presentation will provide key results of this review. Part of a symposium sponsored by the Patient/Person Engagement in Research Interest Group.

Introductory paper

1966 ◽  
Vol 24 ◽  
pp. 3-5
Author(s):  
W. W. Morgan
Keyword(s):  
Line Intensity ◽  
Classification Scheme ◽  
Two Dimensional ◽  
Spectral Classification ◽  
Dimensional Array ◽  
Rr Lyrae ◽  
Metallic Line ◽  
Introductory Paper ◽  
Parameter Varying ◽  
Definition Of

1. The definition of “normal” stars in spectral classification changes with time; at the time of the publication of theYerkes Spectral Atlasthe term “normal” was applied to stars whose spectra could be fitted smoothly into a two-dimensional array. Thus, at that time, weak-lined spectra (RR Lyrae and HD 140283) would have been considered peculiar. At the present time we would tend to classify such spectra as “normal”—in a more complicated classification scheme which would have a parameter varying with metallic-line intensity within a specific spectral subdivision.

2.2. Working Group 2: Conceptual Definitions of Reference Coordinate Systems for Earth Dynamics

1975 ◽  
Vol 26 ◽  
pp. 21-26
Keyword(s):  
Coordinate System ◽  
Working Group ◽  
General Character ◽  
Coordinate Systems ◽  
Reference Coordinate System ◽  
Group 2 ◽  
Definition Of ◽  
Earth Dynamics

An ideal definition of a reference coordinate system should meet the following general requirements:1. It should be as conceptually simple as possible, so its philosophy is well understood by the users.2. It should imply as few physical assumptions as possible. Wherever they are necessary, such assumptions should be of a very general character and, in particular, they should not be dependent upon astronomical and geophysical detailed theories.3. It should suggest a materialization that is dynamically stable and is accessible to observations with the required accuracy.

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