scholarly journals Structural Modelling, Construction and Test of The First 3D-printed Gridshell in Ice Composite

2020 ◽  
Vol 61 (3) ◽  
pp. 177-186
Author(s):  
Arno Pronk ◽  
Qingpeng Li ◽  
Elke Mergny
Keyword(s):  
Iterative Process ◽  
Shell Structures ◽  
Water Mixture ◽  
Cold Environment ◽  
Production Technique ◽  
Dead Load ◽  
New Production ◽  
The Past ◽  
Large Shell ◽  
3D Printed

In the past, record breaking large shell structures with ice composites were successfully realized by spraying cellulose-water mixture on an inflatable mould. This paper presents the application of a new, production technique for ice composites by extrusion instead of spraying. With this additive manufacturing technique, the world's first gridshell in fibre-reinforced ice was designed, constructed, and tested. To increase the stiffness of the gridshell the floorplan of the inflatable mould was designed with an anti-clastic curvature at the supports of the structure. Concerning the pattern of the grid different options were developed and compared and verified in ABAQUS®. The size of the struts were determined by an iterative process. The gridshell was realized in a cold environment by printing multiple layers of cellulose-water mixture on the inflatable mould using piping bags. After the substance has been extruded, the mixture froze at temperatures of minus eight degrees Celsius or lower. The realized structure was tested on-site with a dead load to prove its strength.

scholarly journals Midface Reconstruction: Planning and Outcome

2020 ◽  
Vol 53 (03) ◽  
pp. 324-334
Author(s):  
Gautam Biswas
Keyword(s):  
Digital Imaging ◽  
3D Structure ◽  
Three Dimensional ◽  
The Past ◽  
Complex Anatomy ◽  
Osseointegrated Implants ◽  
Low Profile ◽  
3D Printed ◽  
Midface Reconstruction ◽  
Reconstruction Planning

Abstract Reconstruction of the complex anatomy and aesthetics of the midface is often a challenge. A careful understanding of this three-dimensional (3D) structure is necessary. Anticipating the extent of excision and its planning following oncological resections is critical.In the past over two decades, with the advances in microsurgical procedures, contributions toward the reconstruction of this area have generated interest. Planning using digital imaging, 3D printed models, osseointegrated implants, and low-profile plates, has favorably impacted the outcome. However, there are still controversies in the management: to use single composite tissues versus multiple tissues; implants versus autografts; vascularized versus nonvascularized bone; prosthesis versus reconstruction.This article explores the present available options in maxillary reconstruction and outlines the approach in the management garnered from past publications and experiences.

Technological Change and Financial Innovation in Banking

2019 ◽  
pp. 261-284 ◽  
Author(s):  
W. Scott Frame ◽  
Larry Wall ◽  
Lawrence J. White
Keyword(s):  
Technological Change ◽  
Financial Innovation ◽  
Empirical Literature ◽  
New Production ◽  
Financial Innovations ◽  
The Past ◽  
Modern Economy ◽  
New Organizational Forms ◽  
Recent Developments

Financial intermediation has changed dramatically over the past thirty years, due in large part to technological change. The chapter first describes the role of the financial system in a modern economy and how technological change and financial innovation can affect social welfare. We then survey the empirical literature relating to several specific financial innovations, broadly categorized as new production processes, new products or services, or new organizational forms. In each case, we also include examples of significant FinTech innovations that are transforming various aspects of banking. Drawing on the literature on innovations from the 1990s and 2000s informs what we might expect from recent developments.

scholarly journals EVALUATION OF POST TENSIONED SLAB AND ITS CONTRAST WITH TRADITIONAL RCC SLAB: REVIEW

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Siddiqui Furkhan Ahmed
Keyword(s):  
Flat Plate ◽  
High Strength ◽  
Lateral Load ◽  
Concrete Slabs ◽  
Dead Load ◽  
The Past ◽  
Behavioural Characteristics ◽  
Live Loads ◽  
Post Tensioning ◽  
Post Tension

Post-tensioning is a technique for reinforcing concrete slabs with high-strength tendons. Tendons retain much more concrete in compression. Posttension floors are capable of bearing almost every dead load due to their tensioned tendons, which aid to perform live loads acts on slabs & make them stronger than traditional slabs. For commercial and residential floors, PT slabs are suggested for comparatively limited depths, less heavy weights and free floor elevation. The research on the R.C.C and PT slab has been reviewed, with an integrative impact with the lateral load. The primary aim of this, is to review the reaction and behavioural characteristics of the post-tension flat plate during an earthquake and to contrast it with the traditional slab. For this purpose, the past papers related to the PT slab were studied and a successful conclusion has been made.

scholarly journals An Integrated 3D-Printed Lens with Ultra-Wideband Flower-Shaped Stub Antenna for Ethanol-Water Mixture Characterization

2021 ◽  
Author(s):  
Nonchanutt Chudpooti ◽  
Patchadaporn Sangpet ◽  
Nattapong Duangrit ◽  
Prayoot Akkaraekthalin ◽  
Ian D. Robertson ◽  
...  
Keyword(s):  
Ultra Wideband ◽  
Water Mixture ◽  
3D Printed ◽  
Mixture Characterization

A review of electrode materials based on core–shell nanostructures for electrochemical supercapacitors

2019 ◽  
Vol 7 (8) ◽  
pp. 3516-3530 ◽  
Author(s):  
Kuo-Chuan Ho ◽  
Lu-Yin Lin
Keyword(s):  
Electrode Materials ◽  
Review Article ◽  
Shell Structures ◽  
Core Shell ◽  
Electrochemical Supercapacitors ◽  
Active Materials ◽  
The Core ◽  
The Past ◽  
Shell Nanostructures ◽  
Core Shell Structure

This review article outlines the most commonly used methods for making the core/shell structures as the active materials for supercapacitors over the past decade (2007–2018), and points out the most efficient combination of the material categories and morphologies for the core/shell structure.

A Brief Analysis of Global Rare Earth Trade Structure

2013 ◽  
Vol 734-737 ◽  
pp. 3324-3331 ◽  
Author(s):  
Ying Li ◽  
An Jian Wang ◽  
Jiang Wu Li ◽  
Qi Shen Chen
Keyword(s):  
United States ◽  
Rare Earth ◽  
Production Capacity ◽  
International Market ◽  
The United States ◽  
Global Market ◽  
Earth Structure ◽  
New Production ◽  
The Past ◽  
Import And Export

Since a large number of cheap rare earth from China entered the international market in the late 1980s, the rare earth structure in world started to change, and China replaced the United States as the largest rare earth producer and exporter. However, due to Chinas rare earth management and other factors, rare earth prices have rebounded. The foreign rare earth new production capacity is about to increase production in recent years, and the global rare earth structure will change in the future. Through analysis of rare earth import and export, as well as rare earth prices over the past decades in three major trading countries, China, Japan and the United States, this article points out that the diversified pattern of global rare earth supply will be formed, and China will continue to be the main supplier of the worlds rare earth. China should abandon the practice of one to support the global market in the past, and create a harmonious international trade environment.

A New Production Technique for Molybdenum-Zirconia Cerments

1999 ◽  
Vol 1 (2) ◽  
pp. 111-113 ◽  
Author(s):  
L. D. Schwartz ◽  
C. M. Lukaniuk ◽  
T. H. Estell
Keyword(s):  
Production Technique ◽  
New Production

Forward to the Past? The Case of 'New Production Concepts'

1991 ◽  
Vol 33 (2) ◽  
pp. 155-177 ◽  
Author(s):  
Peter Gahan
Keyword(s):  
New Production ◽  
The Past ◽  
Flexible Specialization

In the 1980s a growing number of books and articles utilized the terms 'post-Fordism; 'post-Taylorism ; 'flexible specialization' and 'new production concepts: This paper explores a number of common themes which have been developed under these separate titles. It is argued that many of these concepts do not represent a clear break from past theoretical traditions. Rather, they offer a restatement of many of the ideas found in Industrialism and Industrial Man (Kerr et al. 1960a). Moreover, it is argued that a number of conceptual and empirical problems exist that invalidate many of the claims made by adherents to these various labels. Particular attention is paid to Australian contributors to the debate, most notably, to the work of John Mathews.

scholarly journals 3D printed jewellery design process based on sculpture inspiration

2020 ◽  
Author(s):  
Karin Košak ◽  
◽  
Deja Muck ◽  
Marjeta Čuk ◽  
Tanja Nuša Kočevar ◽  
...  
Keyword(s):  
3D Printing ◽  
Design Process ◽  
3D Modelling ◽  
Educational Process ◽  
New Production ◽  
Graphic Arts ◽  
Textile Design ◽  
3D Print ◽  
3D Printed ◽  
The University

In the article we present the educational process in which design students were guided through their design process, creating 3D printed jewellery inspired by the Forma Viva sculptures of the outdoor gallery Kostanjevica na Krki. The assignment was part of the international project Cumulus Re/Forma Viva, whose main goal was to implement digitization using 3D technology in the field of education for the preservation of cultural heritage. The task given to the 1st year masters students of Fashion and Textile Design at the Department of Textiles, Graphic arts and Design at the University of Ljubljana was to select a wooden sculpture and transform the visual and conceptual idea into a 3D printed jewellery collection. The curriculum of the course includes teaching the theoretical basics of 3D printing, 3D print design – fashion accessories and new production, business and marketing models as "disruptive" changes that result from this. In the practical part, students will learn the advanced design process of fashion accessory objects, including 3D technologies such as 3D modelling and 3D printing. Students are guided through a process in which selected visual and conceptual content is translated into fine jewellery that can be created using various 3D printing technologies. In this way, students tested themselves in two new areas that allowed them to expand their design knowledge and experience in 3D modelling and jewellery design with the goal of better "arming" themselves with the latest technologies for today's competitive world.

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