Upscaling Sensing Materials With Challenges of Sensors Embedding in Powder Based Materials and Polymers

2015 ◽  
Author(s):  
Samir Mekid ◽  
Nouari Saheb ◽  
Hammam Daraghma ◽  
Asad Butt ◽  
Khurram Qureshi
Keyword(s):  
3D Printing ◽  
Fiber Optics ◽  
Layered Manufacturing ◽  
External Effects ◽  
Additive Process ◽  
New Concepts ◽  
Host Materials ◽  
Macro Scale ◽  
And Performance ◽  
2D And 3D

This paper has explored and analyzed new routes to design new concepts of materials capable of feeling external effects and feed information back to a monitor and/or react through embedded actuators to resist any deformation. The material with its new artificial sensing property can be easily scaled-up to govern a whole structure at macro scale. The research has investigated a variety of manufacturing routes to build prototypes to be tested for the sake of characterization and performance assessment as well as cost analysis to assess effectiveness. This has included ultrasonic fiber optics embedding in thin Metals e.g. Aluminum which has shown some challenges to be discussed. The host materials included mainly layered manufacturing based materials e.g. powder based materials (Alloy Al6061) and additive process e.g. 3D printing with ABS material. This work has considered samples with concepts having embedded fiber optics in 1D, 2D and 3D. The integrity of the fiber optics and the host materials as well as the sensors performance has been investigated under several conditions of pressure, temperature and geometric placement of the fiber optics. A parametric compromise between materials standard performance and integrity of the sensors is to be found.

3D Printing Challenges and New Concepts for Production of Complex Objects

2021 ◽  
pp. 153-180
Author(s):  
Hayden Taylor ◽  
Hossein Heidari ◽  
Chi Chung Li ◽  
Joseph Toombs ◽  
Sui Man Luk
Keyword(s):  
3D Printing ◽  
Complex Objects ◽  
New Concepts

scholarly journals Effects of 3D Printing-Line Directions for Stretchable Sensor Performances

Materials ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1791
Author(s):  
Chi Cuong Vu ◽  
Thanh Tai Nguyen ◽  
Sangun Kim ◽  
Jooyong Kim
Keyword(s):  
3D Printing ◽  
Thermoplastic Polyurethane ◽  
Three Dimensional ◽  
Optimal Solution ◽  
Human Motion ◽  
Repeated Measurements ◽  
Fused Filament Fabrication ◽  
And Performance ◽  
The Times ◽  
Stretchable Sensors

Health monitoring sensors that are attached to clothing are a new trend of the times, especially stretchable sensors for human motion measurements or biological markers. However, price, durability, and performance always are major problems to be addressed and three-dimensional (3D) printing combined with conductive flexible materials (thermoplastic polyurethane) can be an optimal solution. Herein, we evaluate the effects of 3D printing-line directions (45°, 90°, 180°) on the sensor performances. Using fused filament fabrication (FDM) technology, the sensors are created with different print styles for specific purposes. We also discuss some main issues of the stretch sensors from Carbon Nanotube/Thermoplastic Polyurethane (CNT/TPU) and FDM. Our sensor achieves outstanding stability (10,000 cycles) and reliability, which are verified through repeated measurements. Its capability is demonstrated in a real application when detecting finger motion by a sensor-integrated into gloves. This paper is expected to bring contribution to the development of flexible conductive materials—based on 3D printing.

2D and 3D printing for graphene based supercapacitors and batteries: A review

2020 ◽  
Vol 25 ◽  
pp. e00190 ◽  
Author(s):  
Johannes P. Mensing ◽  
Tanom Lomas ◽  
Adisorn Tuantranont
Keyword(s):  
3D Printing ◽  
2D And 3D

scholarly journals Electromechanical Assessment and Induced Temperature Measurement of Carbon Fiber Tows under Tensile Condition

Materials ◽  
2020 ◽  
Vol 13 (19) ◽  
pp. 4234
Author(s):  
Samir Mekid ◽  
Hammam Daraghma ◽  
Salem Bashmal
Keyword(s):  
Carbon Fiber ◽  
3D Printing ◽  
Tensile Test ◽  
Thermal Characteristics ◽  
Acrylonitrile Butadiene Styrene ◽  
Break Point ◽  
Host Material ◽  
Special Focus ◽  
Host Materials ◽  
Butadiene Styrene

The paper presents an investigation and analysis of the electromechanical and thermal characteristics of the carbon fiber alone as single tow and embedded in host materials such as polymer e.g., acrylonitrile butadiene styrene (ABS) using 3D printing. While carbon fibers can partially reinforce the structure, they can act as sensors to monitor the structural health of the host material. The piezo-resistive behavior was examined without any pretreatment of the carbon fiber under tensile test in both cases. Special focus on the filaments clamping types and their effects was observed. An auxetic behavior was exhibited; otherwise, the free part shows elastic and yielding ranges with break point at high resistance. An induced temperature of the carbon fiber was measured during the tensile test to show low variation. The carbon fiber can provide strength contribution to the host material depending on the percentage of filling the material in 3D printing. The relative variation of the electrical resistance increases by 400% while embedded in the host material, but decreases as the tows filament density increases from 1 to 12 K.

3D Printable Resources for Engaging STEM Students in Laboratory Learning Activities and Outreach Programs: Inexpensive and User-Friendly Instrument Kits for Educators

MRS Advances ◽  
2018 ◽  
Vol 3 (49) ◽  
pp. 2937-2942 ◽  
Author(s):  
Lon A. Porter
Keyword(s):  
3D Printing ◽  
Mathematics Learning ◽  
Digital Design ◽  
Outreach Programs ◽  
Stem Students ◽  
3D Printed ◽  
Design Software ◽  
And Performance ◽  
And Mathematics ◽  
User Friendly

ABSTRACTContinued advances in digital design software and 3D printing methods enable innovative approaches in the development of new educational tools for laboratory-based STEM (science, technology, engineering and mathematics) learning. The decreasing cost of 3D printing equipment and greater access provided by university fabrication centers afford unique opportunities for educators to transcend the limitations of conventional modes of student engagement with analytical instrumentation. This work shares successful efforts at Wabash College to integrate user-friendly and inexpensive 3D printed instruments kits into introductory STEM coursework. The laboratory kits and activities described provide new tools for engaging students in the exploration of instrument design and performance. These experiences provide effective ways to assist active-learners in discovering the technology and fundamental principles of analysis and deliberately confront the “black box” perception of instrumentation.

Performance Oriented Design of Semiregular Anisotropic Porous Structures

2018 ◽  
Author(s):  
Chao Xu ◽  
Lili Pan ◽  
Ming Li ◽  
Shuming Gao
Keyword(s):  
3D Printing ◽  
Porous Materials ◽  
Design Problem ◽  
Degrees Of Freedom ◽  
Design Space ◽  
Manufacturing Technology ◽  
Porous Structures ◽  
Precise Control ◽  
And Performance

Porous materials / structures have wide applications in industry, since the sizes, shapes and positions of their pores can be adjusted on various demands. However, the precise control and performance oriented design of porous structures are still urgent and challenging, especially when the manufacturing technology is well developed due to 3D printing. In this study, the control and design of anisotropic porous structures are studied with more degrees of freedom than isotropic structures, and can achieve more complex mechanical goals. The proposed approach introduces Super Formula to represent the structural cells, maps the design problem to an optimal problem using PGD, and solves the optimal problem using MMA to obtain the structure with desired performance. The proposed approach is also tested on the performance of the expansion of design space, the capture of the physical orientation and so on.

scholarly journals A. Blok and poetic strategies of postmodernism

2021 ◽  
pp. 153-160
Author(s):  
Неля Магомедовна Шишхова ◽  
Кирилл Николаевич Анкудинов
Keyword(s):  
Cultural Tradition ◽  
Actual Problem ◽  
Cultural Expression ◽  
Avant Garde ◽  
Modern Times ◽  
New Concepts ◽  
Poetic Expression ◽  
And Performance ◽  
Postmodern Poetry ◽  
Creative Forces

Анализируется поэзия А. Блока, ее взаимосвязь с реалистическими, семантическими и перфомативными аспектами творчества русских постмодернистов. Тексты рассматриваются как способ мотивирования поэтических знаков в постмодернистской традиции. Они позволяют контекстуализировать модели выразительности в авангардистской поэзии и выделить основные парадигмы в ее трактовке, адаптировать художественные приемы и поиски нового языка. Отдельное вимание уделяется особенностям поэтического высказывания и ее взаимодействию с пространством стиха. Интерес акцентируется на диалектике разрушительных и созидательных сил в деконструктивизме наследия Вс. Некрасова, Д. Пригова, Т. Кибирова и др. Обсуждается актуальная проблема для теории современной поэзии: что стало с постмодерном как языком описания эпохи в XXI столетии. Особое внимание уделяется преемственности новых концепций с предыдущей культурной традицией в негативной и позитивной версиях. Тема особенно актуализируется благодаря выраженному стремлению представить тексты А.Блока и постмодернистской поэзии как культурное выражение новейшего времени. An analysis is made of the poetry of A. Blok, its relationship with the realistic, semantic and performance aspects of the work of Russian postmodernists. Texts are explored as a way to motivate poetic signs in the postmodern tradition. They make it possible to contextualize models of expressiveness in avant-garde poetry and highlight the main paradigms in its interpretation, adapt artistic techniques and searches for a new language. An attention is paid to the peculiarities of the poetic expression and its interaction with the space of the verse. The interest is focused on the dialectic of destructive and creative forces in the deconstruction of the legacy of Vs. Nekrasov, D. Prigov, T. Kibirov, etc. The paper discusses the actual problem for the theory of modern poetry: what has become with the postmodern as the language of describing the era in the 21st century. Particular attention is paid to the continuity of new concepts with the previous cultural tradition in negative and positive versions. The theme is especially actualized due to the expressed desire to present the texts of A. Blok and postmodern poetry as a cultural expression of modern times.

scholarly journals Investigating the rheology of 2D titanium carbide (MXene) dispersions for colloidal processing: Progress and challenges

2021 ◽  
Author(s):  
Michael Greaves ◽  
Mana Mende ◽  
Jiacheng Wang ◽  
Wenji Yang ◽  
Suelen Barg
Keyword(s):  
3D Printing ◽  
Titanium Carbide ◽  
Systematic Study ◽  
2D Materials ◽  
Rheological Characteristics ◽  
Colloidal Processing ◽  
Electrically Conductive ◽  
Rheological Analysis ◽  
Rheological Data ◽  
2D And 3D

AbstractAmong 2D materials, MXenes (especially their most studied member, titanium carbide) present a unique opportunity for application via colloidal processing, as they are electrically conductive and chemically active, whilst still being easily dispersed in water. And since the first systematic study of colloidal MXene rheology was published in 2018 (Rheological Characteristics of 2D Titanium Carbide (MXene) Dispersions: A Guide for Processing MXenes by Akuzum, et al.), numerous works have presented small amounts of rheological data which together contribute to a deeper understanding of the topic. This work reviews the published rheological data on all MXene-containing formulations, including liquid crystals, mixtures and non-aqueous colloids, which have been used in processes such as stamping, patterning, 2D and 3D printing. An empirical model of aqueous titanium carbide viscosity has been developed, and recommendations are made to help researchers more effectively present their data for future rheological analysis. Graphic abstract

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