Ospald F.,University of Kaiserslautern |
Zouaghi W.,Goethe University Frankfurt |
Beigang R.,University of Kaiserslautern |
Matheis C.,Fraunhofer Institute for Physical Measurement Techniques |
And 8 more authors.
Optical Engineering | Year: 2014
The usability of pulsed broadband terahertz radiation for the inspection of composite materials from the aeronautics industry is investigated, with the goal of developing a mobile time-domain spectroscopy system that operates in reflection geometry. A wide range of samples based on glass and carbon fiber reinforced plastics with various types of defects is examined using an imaging system; the results are evaluated both in time and frequency domain. The conductivity of carbon fibers prevents penetration of the respective samples but also allows analysis of coatings from the reflected THz pulses. Glass fiber composites are, in principle, transparent for THz radiation, but commonly with significant absorption for wavelengths 1 THz. Depending on depth, matrix material, and size, defects like foreign material inserts, delaminations, or moisture contamination can be visualized. If a defect is not too deep in the sample, its location can be correctly identified from the delay between partial reflections at the surface and the defect itself. © The Authors.
Agency: European Commission | Branch: FP7 | Program: CP-FP | Phase: AAT.2010.4.1-1.;AAT.2010.4.1-5. | Award Amount: 4.51M | Year: 2010
Modern aircraft structures have to comply with severe requirements: they have to be light as well as safe. These requirements lead to an increased use of composite materials in the aircraft industry. However, new materials also require new techniques in order to inspect aircraft components during production in a non-destructive way. The primary goal of the DOTNAC project is to develop a safe, contact-free, high resolution, and potentially on-site NDT tool based on terahertz (THz) waves, which will be easy to integrate in industrial facilities, and allowing the detection of surface, subsurface and in-depth defects in a variety of composite materials used in aeronautics. The developed NDT tool will fill in the performance gaps that are still present amongst the established NDT techniques and will therefore be an extremely useful tool in NDT in terms of sensor fusion. The THz spectrum covers a frequency spectrum from the far-IR region to the mid-IR region (centre frequency between 100 GHz and 10 THz). Over the past several years, there has been a significant interest in the potential of THz detection for imaging. There are two major factors contributing to this interest: (1) Terahertz radiation is readily transmitted through most non-metallic and non-polarized media, thus enabling THz systems to see-through materials, (2) THz radiation is non-ionizing and poses no health risk to the systems operator. Nowadays very little research is being performed using THz radiation for air transport NDT, and little is known on how typical composite material defects such as delamination, porosities and inclusions can be detected by THz waves. Because of the rapidly increasing use of composites, especially in critical parts, nearly any industry (civilian and military) that fabricates and/or maintains composite structures can benefit both in terms of cost savings and part integrity.
News Article | February 23, 2017
A special exhibition by Israeli artist Orna Ben-Ami entitled "Entire Life in a Package" will be displayed at the United Nations in partnership with The Israel Project from February 27 to March 10, 2017. The exhibit, which includes welded iron sculptures combined with photographs of refugees in various situations, focuses on the plight of refugees from around the world. "I was shocked and moved by the view of the refugees over the past few years and I wanted to bring this sad and painful subject to the forefront of world opinion," said Ms. Ben-Ami. "Iron expresses the will of the displaced to hold on strongly to their identity and renders them eternal and meaningful, like metal monuments," she continued. The artist aims to deal with the personal and the public alike. In her iron works, she attempts to combine heaviness and lightness. The substance is massive, while the result aims to appear soft, light and filled with emotion. “Along with the welded iron sculptures I combined, in my own way, treated images and charcoal sketches with iron, as one unit,” Orna said. “Iron brings out the physical and emotional weight of the journey. I attempt to "soften" the iron, as we attempt to soften life, but the message remains charged both on the personal level and the collective,” she said. Israel's Ambassador to the UN Danny Danon sees special significance in his Mission hosting this exhibition at UN headquarters in New York. "As a nation which was dispersed throughout the world and who were refugees for many generations, we hope that this exhibit will raise awareness about this important issue," said Ambassador Danon. Josh Block, the president and CEO of The Israel Project said: “As the world grapples with the biggest humanitarian drama in recent history, one that shatters the lives of many millions around the world, this exhibition brings the unique perspective of a renowned Israeli artist who, like many other Israelis and Americans, feel the pain and distress of those displaced by war, famine and disasters around the world.” Members of the media are invited to a special opening of the exhibition. Orna Ben-Ami, a former reporter and news editor transitioned from working with words to working with materials when she started to learn gold and silversmith techniques at the Jerusalem Technological Center. In 1990 she began studying sculpture at the Corcoran School of Art in Washington, DC. Ben-Ami has been engaged in sculpting and uses iron as the main raw material for her artistic expression since 1994. Orna Ben-Ami “softens” the iron by cutting and welding it in her own hands. Ben-Ami has had thirty-two solo exhibitions in museums across the United States and her work has appeared in galleries and museums in Italy, France, Taiwan, Mexico and Israel. Forty of her outdoor sculptures are placed in public spaces in Israel and Germany.
News Article | March 1, 2017
A special exhibition by Israeli artist Orna Ben-Ami entitled "Entire Life in a Package" opened today at the United Nations in partnership with The Israel Project (http://www.ornabenami.com/ironanddrawings.html). The exhibit, which will remain on display until March 10th, includes welded iron sculptures combined with photographs of refugees in various situations and focuses on the plight of refugees from around the world. Diplomats from around the world and senior UN officials, including Mr. Arjun Jain, Senior Policy Advisor at the UNHCR, took part in a ceremony marking the opening of the exhibit. "We are so proud to host this exhibition. As a people who spent 2,000 years living in exile, we are no strangers to the world of refugees," said Ambassador Danon. "We experienced firsthand the lack of security while in exile, while never losing hope for a better future. As Jews, we cannot allow ourselves to be indifferent to the plight of refugees today," the Ambassador continued. In her exhibit, the artist hopes to represent the identity and sense of belonging of refugees. The iron she uses expresses the will to hold on to a strong identity that refugees possess, while at the same time their hopes to render these experiences into meaningful lasting monuments. By then cutting and welding the iron, Ben Ami seeks to 'soften' this hardest of substances, while at the same time further strengthening the message of her works. “I feel that as an Israeli artist I have to contribute my part by shedding light on the situation of the refugees today, and pick up the awareness of the world to this human tragedy. Every piece of iron that I welded for this exhibition made me feel closer to the people that have to leave their homes and look for an unknown future elsewhere," said Mrs. Ben Ami. "I wish that artists will get the chance to be more influential in the world, because we are not destroying, we are creating,” she added. Josh Block, the president and CEO of The Israel Project, also addressed the exhibit opening. “For us at The Israel Project, this exhibition was an opportunity to showcase Israel’s sensitivity to the dreams represented in the upheaval of the journeys of refugees. After all, Israel is a country whose people know too well what it means to search for a haven from fear and persecution,” said Mr. Block. About the Artist: Orna Ben-Ami, a former reporter and news editor transitioned from working with words to working with materials when she started to learn gold and silversmith techniques at the Jerusalem Technological Center. In 1990 she began studying sculpture at the Corcoran School of Art in Washington, DC. Ben-Ami has been engaged in sculpting and uses iron as the main raw material for her artistic expression since 1994. Orna Ben-Ami “softens” the iron by cutting and welding it in her own hands. Ben-Ami has had solo exhibitions in museums across the United States and her work has appeared in galleries and museums in Italy, France, Taiwan, Mexico and Israel. Forty of her outdoor sculptures are placed in public spaces in Israel and Germany.
Agency: European Commission | Branch: H2020 | Program: RIA | Phase: NMP-08-2014 | Award Amount: 8.34M | Year: 2015
A number of nanomedicine formulations have enabled, or been shown to hold considerable potential for enabling more effective and less toxic therapeutic interventions. However, progress to date in translating these initiatives to commercial success has been limited. One of the main reasons for this bottleneck is due to the inability of researchers and stakeholders to manufacture batches of the nanomedicine product at the required scale and according to Good Manufacturing Practice (GMP) requirements. The NANOFACTURING project will focus on - facilitating access to required infrastructures and expertise - creating GMP pilot lines for up-scaling manufacturing - addressing the current developmental and production gaps - taking nanomaterials already successfully produced at proof-of-concept/milligram levels and facilitating their scale-up to sub-kilogram quantities - providing large-scale and GMP production for clinical trials and nanomedicine translation. The NANOFACTURING project, through a consortium of 9 partners, will develop the synthetic processes, process control methods, analytical assays for QA/QC, functional specifications, and best practices, interfacing existing R&D centres of excellence, transfer organisations and private GMP manufacturing facilities (including SMEs) to ensure efficient translation from discovery through to first in man, proof-of-concept studies and beyond to Phase III according to industrial and regulatory standards. Specifically, the NANOFACTURING project aims to create a platform process for early, mid- and large-scale manufacturing of glycan-coated gold nanoparticles (GNPs), a widely researched and developed class of self-forming nanoparticles. The ability to engineer new nanopharmaceuticals based on this patent protected platform technology, developed by Midatech Biogune S.L. (Project Coordinator), will have inherent advantages over existing treatments for multiple therapeutic areas.
Agency: European Commission | Branch: H2020 | Program: CS2-IA | Phase: JTI-CS2-2015-CFP02-AIR-02-16 | Award Amount: 482.44K | Year: 2016
The main objective of the COFRARE 2.0 project, answering to the call for proposal launched in WP B-4.3, will be to carry out process development for composite frames manufacturing with high production rate and low cost to provide a step forward in the development of aerostructures composite component for aircrafts such as Regional ones. The project will contribute to the development and validation of an advanced process for manufacturing composite fuselage frames, which will result in a significant reduction in overall production costs, component weight and manufacturing flow. In order to understand the feasibility of the technology to match the application, LRI and RTM processes will be validated and cost assessed through the application of the building block approach, meaning starting from Level 1 coupons to advance then to Level 2 elements to finally validate at test Level 3 of subcomponents to pass at the end to the realization of two demonstrators.
Agency: European Commission | Branch: FP7 | Program: JTI-CS | Phase: JTI-CS-2010-5-SGO-02-031 | Award Amount: 150.00K | Year: 2011
Nowadays, in-service damages such as impacts during overhaul or external influences, such as exposure to severe environments with chemical agents, thermal loadings or ultraviolet light have to be taken into account for the design of the elements. Therefore, knock-down factors have to be determined. This knockdown factors take into account an extensive number of conditions such as loads both static and cyclic-, temperatures, impact damages or the exposure to aggressive mediums such as engine oils. Due to the costs and complexity of performing full scale tests including factors such as temperature and exposure to a variety of aggressive atmospheres, during the qualification, lots of test are necessary in order to certify the integrity of the component material. The actual state of the art is to determine this knock-down factors independently and not in combination of them, meaning that composite samples are for example immersed during a determined time in a fluid and afterwards tested statically at a given temperature. The innovative idea to develop during this project is to develop a test set-up permitting to expose on the same time the specimen to not only thermal and cyclic mechanical loading, but also to synthetic engine oils atmospheres in order to be afterwards able to quantify how the global interaction of these parameters is and be able to predict failure of real manufactured parts subjected to near reality loading (in terms of loading, temperature and oil exposure) scenarios.
Agency: European Commission | Branch: H2020 | Program: CS2-IA | Phase: JTI-CS2-2016-CFP03-AIR-02-21 | Award Amount: 1.71M | Year: 2016
The main objective of FORMIT is to develop a modular tooling to integrate a wing upper skin and an external wing leading edge with several T-Shape and omega stringers. Skins will be laminated on the integration tool by Topic Manager with Automated Fiber Placement technology and stringer will be produced with an innovative continuous forming process patented by Applus. Both structures will be made of carbon fiber embedded in PEEK thermoplastic matrix. The conjunction of these two manufacturing technologies and thermoplastic composite enables an out-of-autoclave production process and curing final structure with low cost and high production rates. This project will be a step forward to manufacture an Outer External Wing out of autoclave and a morphing leading edge, which will result in a reduction in production costs, airplane fuel consumption and resilience to impact. Feasibility of the technology will be assessed by several tests through a building block approach up to Level 2 (Element), including Level 1 (coupons) and physic-chemical analysis. The selected process will be taken to TRL5, to demonstrate industrial feasibility. To achieve these objectives, main activities are: Design of a continuous manufacturing stringer process based on a well-know and proved Applus Forming approach; Definition and execution of Test Plan to assess main mechanical characteristics of the manufacturing trials of continuous stringer process; Tests performed following the building block approach on designed and manufactured coupons, elements and sub-components; Design of innovative and modular tooling to integrate these stringers to wing upper skin and leading edge; Manufacturing of 18 Thermoplastic T-stringer and 2 omega-stringers; Manufacturing and commissioning of 2 tooling to enable: - The laminate of the wing upper skin and the integration with manufactured T- stringer. - The laminate the leading edge skin and the integration of manufactured omega- stringers.