NDT characterisation of carbon-fibre and glass-fibre composites using non-invasive imaging techniques

2010 ◽  
Author(s):  
N.P. Avdelidis ◽  
C. Ibarra-Castanedo ◽  
A. Bendada ◽  
E. Saarimaki ◽  
T. Kauppinen ◽  
...  
Keyword(s):  
Carbon Fibre ◽  
Glass Fibre ◽  
Imaging Techniques ◽  
Non Invasive ◽  
Fibre Composites

Automotive drive shafts

1980 ◽  
Vol 294 (1411) ◽  
pp. 577-582
Keyword(s):  
Cost Effectiveness ◽  
Carbon Fibre ◽  
Glass Fibre ◽  
Final Section ◽  
Cost Effective ◽  
Resin Matrix ◽  
Carbon Fibres ◽  
Propeller Shaft ◽  
Engine Torque ◽  
Fibre Composites

One part of the work of composite engineers is to find cost effective uses for new fibre composites. One such use identified for carbon fibre is in the automotive propeller shaft. This is the fore and aft shaft transmitting the engine torque of a car or truck to the driven axle to propel the vehicle. This paper will relate the requirements for drive shafts to the properties of carbon fibres. Both technical and marketing requirements will be considered. The carbon fibre properties are related to performance when incorporated in a resin matrix. Reference will be made to work on ‘alloying’ carbon fibre with glass fibre. This is shown to enhance the overall cost effectiveness of the resulting parts. A final section will illustrate the important aspect of producing test data that build up the automotive designer’s confidence in the application of an unfamiliar material.

Integration Between Computed Tomography and Nuclear Medicine for Non-invasive Assessment of Coronary Anatomy and Myocardial Perfusion

2009 ◽  
Vol 5 (2) ◽  
pp. 15
Author(s):  
Wanda Acampa ◽  
Mario Petretta ◽  
Carmela Nappi ◽  
Alberto Cuocolo ◽  
◽  
...  
Keyword(s):  
Computed Tomography ◽  
Coronary Heart Disease ◽  
Blood Flow ◽  
Heart Disease ◽  
Myocardial Perfusion ◽  
Myocardial Blood Flow ◽  
Imaging Techniques ◽  
Emission Computed Tomography ◽  
Coronary Anatomy ◽  
Non Invasive

Many non-invasive imaging techniques are available for the evaluation of patients with known or suspected coronary heart disease. Among these, computed-tomography-based techniques allow the quantification of coronary atherosclerotic calcium and non-invasive imaging of coronary arteries, whereas nuclear cardiology is the most widely used non-invasive approach for the assessment of myocardial perfusion. The available single-photon-emission computed tomography flow agents are characterised by a cardiac uptake proportional to myocardial blood flow. In addition, different positron emission tomography tracers may be used for the quantitative measurement of myocardial blood flow and coronary flow reserve. Extensive research is being performed in the development of non-invasive coronary angiography and myocardial perfusion imaging using cardiac magnetic resonance. Finally, new multimodality imaging systems have recently been developed bringing together anatomical and functional information. This article provides a description of the available non-invasive imaging techniques in the assessment of coronary anatomy and myocardial perfusion in patients with known or suspected coronary heart disease.

Semi-Quantitative Ultrasonographic Evaluation of NAFLD

2020 ◽  
Vol 26 (32) ◽  
pp. 3915-3927 ◽  
Author(s):  
Stefano Ballestri ◽  
Claudio Tana ◽  
Maria Di Girolamo ◽  
Maria Cristina Fontana ◽  
Mariano Capitelli ◽  
...  
Keyword(s):  
Liver Disease ◽  
Fatty Liver ◽  
Imaging Techniques ◽  
Metabolic Complications ◽  
Nonalcoholic Fatty Liver ◽  
Non Invasive ◽  
Increased Risk ◽  
Risk Of Progression ◽  
Progressive Liver Disease

: Nonalcoholic fatty liver disease (NAFLD) embraces histopathological entities ranging from the relatively benign simple steatosis to the progressive form nonalcoholic steatohepatitis (NASH), which is associated with fibrosis and an increased risk of progression to cirrhosis and hepatocellular carcinoma. NAFLD is the most common liver disease and is associated with extrahepatic comorbidities including a major cardiovascular disease burden. : The non-invasive diagnosis of NAFLD and the identification of subjects at risk of progressive liver disease and cardio-metabolic complications are key in implementing personalized treatment schedules and follow-up strategies. : In this review, we highlight the potential role of ultrasound semiquantitative scores for detecting and assessing steatosis severity, progression of NAFLD, and cardio-metabolic risk. : Ultrasonographic scores of fatty liver severity act as sensors of cardio-metabolic health and may assist in selecting patients to submit to second-line non-invasive imaging techniques and/or liver biopsy.

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