scispace - formally typeset
Search or ask a question

How to measure fibre? 


Best insight from top research papers

Fibers can be measured using various methods and devices. One approach involves utilizing a fiber three-dimensional measuring device, which includes a fiber loading platform, image capturing devices, a processor, and a storing element to construct a three-dimensional model of the fiber based on two-dimensional images captured . Another method involves an optical fiber measuring technique that acquires detection control parameters, performs multiple optical fiber detections with attenuation modulation, and calculates optical fiber curves using a preset algorithm . Additionally, a fiber measurement device may include components like a light detector, band limiting circuit, and waveform equalizing circuit to extract and process feedback light signals for measurement purposes . Ultrasonic signals can also be employed, where a transmitter couples signals into a fiber sample, a receiver detects them, and a processing unit determines fiber properties based on the frequency response of the transmitted signals .

Answers from top 5 papers

More filters
Papers (5)Insight
The fibre assessment apparatus in the paper measures fibre diameter by using a light source, focusing means, and image sensing to assess natural, synthetic, and optical fibres for irregularities.
An apparatus measures fibre properties by transmitting ultrasonic signals through the sample and analyzing the frequency response, determining measures like mean fibre diameter based on peak frequency.
Patent
刘伟, Wei Liu 
25 May 2015
1 Citations
The optical fiber measuring method involves acquiring control parameters, performing multiple detections with attenuation modulation, and using a curve algorithm to calculate and obtain optical fiber curves.
Patent
14 Jun 2012
2 Citations
The fiber measurement device in the paper measures fiber by detecting feedback light of laser output, extracting laser frequency components, and equalizing waveforms through differentiation and addition circuits.
The fiber three-dimensional measuring device in the paper measures fiber by capturing two-dimensional images of the fiber and constructing a three-dimensional model using a processor.

Related Questions

How to measure IOP?4 answersThe measurement of intraocular pressure (IOP) is crucial in ophthalmic examinations, particularly for glaucoma patients and those at risk for developing glaucoma. The gold standard technique for measuring IOP is Goldmann applanation tonometry (GAT), but it has limitations such as the need for local anesthetics and difficulty in certain patient populations. Various tonometers have been proposed as alternatives to GAT, each with its own advantages and disadvantages. Continuous monitoring of IOP is also being evaluated as a potential improvement in glaucoma management.In terms of methodology, it is important to consider the order in which different tonometry methods are performed, as rebound tonometry (RT) has been found to overestimate IOP compared to GAT when used first. The inter-observer and intra-observer agreement in IOP measurements should also be taken into account.The development of tonometry has been driven by the need for more accurate measurements of IOP, as elevated IOP is associated with glaucoma and lowering IOP has been shown to be effective in managing the condition. Different tonometry devices work on different principles, and clinicians must choose the appropriate technique based on accuracy, convenience, and cost.
How to measure viscosity of cellulose powder?5 answersThe viscosity of cellulose powder can be measured using different methods. One method involves dissolving the cellulose powder in a cuprammonium solution and using a capillary viscometer to measure the viscosity. Another method involves preparing a cellulose solution with a specific concentration and measuring the flowing time of the solution in an Ubbelohde viscometer. Additionally, the viscosity of cellulose nanocrystal suspensions can be characterized using an automated rolling ball viscometer, which measures the viscosity of diluted suspensions and provides information about the hydrodynamic dimensions of the nanocrystals. These methods offer convenient and accurate ways to measure the viscosity of cellulose powder and suspensions.
How to measure inflation?5 answersOne way to measure inflation is by using a price index, which calculates the average price change over time based on available price information. Different measures of inflation exist, such as the Consumer Price Index (CPI), which tracks the prices of consumer goods and services. The CPI is commonly used by central banks, like the Federal Reserve, as an index of prices for monetary policy purposes. In India, the Consumer Price Index for Industrial Workers (CPI-IW) is considered preferable to other measures like the Wholesale Price Index or the GDP deflator. Another approach to measuring inflation is by estimating inflation volatility, which can be done using statistical models and considering factors like rational inattention and the arrival of news in the market. Overall, measuring inflation involves considering various factors, including the choice of price index, the accuracy of price measurement, and the inclusion of different goods and services in the index.
How to measure?1 answersMeasurement is a fundamental aspect of physics and psychology. In physics, measurements are used to adopt or reject physical theories, and the interaction between the observer and the observed system is crucial. Contextuality plays a role in rendering interactions and measurements empirically tangible, and the collision of different epistemological stances can present challenges in measurement. In psychology, the stability, validity, and content of a measure are important considerations. Stability refers to the consistency of a measure over repetitions, validity relates to whether the measure measures what it purports to measure, and content is determined by the shared conceptual system embedded in a natural language. In statistical work, measurement involves predicting the values of random variables or estimating the parameters of a distribution, particularly in the presence of missing observations. The conditional distribution of latent variables given observed data is often used for measurement.
What are we Trying to Measure?5 answersThe abstracts provided discuss various aspects of measuring different types of information. One abstract focuses on health outcome assessment in older people with cancer, highlighting the need for a user-generated approach to measure health outcomes in this population. Another abstract discusses the evaluation of development, emphasizing the importance of measuring poverty reduction, unemployment reduction, and inequality reduction as indicators of progress. A third abstract explores the measurement of thermal capability in insulation materials, suggesting the use of compatibility tests and potential thermal capability measurements. The fourth abstract discusses the assessment of a library's iPad loan program, measuring factors such as staff time, borrower support incidents, and user surveys to evaluate the program's value. The final abstract examines the measurement of the quality of health information on the internet, discussing various assessment instruments and their limitations.
What are different ways in which personality is measured?5 answersDifferent approaches are used to measure personality. One approach is the trait accuracy approach, where participants discriminate among targets on a given trait, making intertarget comparisons. Another approach is the profile accuracy approach, where participants discriminate between traits for a given target, making intratarget comparisons. These approaches are not conceptually and empirically the same, but represent distinct abilities that rely on different judgment processes. Additionally, different theoretical models have generated different strategies for measuring personality characteristics. For example, humanistically oriented models ask individuals directly about themselves and their goals, while psychodynamically oriented theories propose that people lack insight into their feelings and motives, and their behavior is influenced by processes outside of their awareness. Personality can also be measured using surveys, observer ratings, and field experiments.

See what other people are reading

What is an inversion device?
5 answers
An inversion device is a piece of electronic equipment used to convert direct-current voltage into alternating-current voltage efficiently. It consists of various modules like inversion modules, follow current modules, and protection modules to ensure smooth operation and high precision in voltage conversion. Inversion devices can also include robotic components for substrate reversing applications, where shaft portions, robotic arm portions, and reversing portions work together to flip substrates effectively in a space-saving manner. Additionally, some inversion devices incorporate support frames with foot platforms for user convenience and may even feature CPUs for data collection and transmission to external devices like mobile phones. These devices can also include power limitation circuits to manage input currents and enable direct loading of inductive loads, reducing the need for additional components like industrial frequency transformers and enhancing portability.
Does UV radiation penetrate even during the colder months in the Netherlands?
5 answers
UV radiation penetration in the Netherlands varies throughout the year. Studies show that UV-B radiation (280–320 nm) is limited to the upper decimetres in most inland waters, with Lake Maarsseveen being the clearest waterbody with a KdUVB of 9.1 (m−1). Analysis of UV climate data from Bilthoven indicates that UV doses are influenced by factors like ozone levels, clouds, and aerosols, with clouds reducing erythemal UV doses to 68% of clear-sky values. Spectral UV measurements reveal that cloud cover and aerosols reduce effective UV doses by approximately 35% in the Netherlands. Questionnaire-based studies on sunlight exposure suggest that even during colder months, individuals can receive significant UV exposure, especially during sunny weeks and vacations abroad. Therefore, while UV radiation may be attenuated during colder months, it still penetrates to some extent in the Netherlands.
How do home ECG monitoring devices compare with clinical ECG systems in terms of accuracy and reliability?
5 answers
Home ECG monitoring devices have shown promising accuracy compared to clinical ECG systems. Studies have highlighted that devices like Withings Scanwatch, Eko DUO, and Kardia 6L exhibit high accuracy in tasks such as AF classification and QRS morphology assessment. Capacitive electrocardiography (cECG) has been explored for wearable systems, emphasizing optimal lead placement for reliable R-wave detection and minimizing motion artifacts. Additionally, the MAX30001 integrated circuit has been tested for cardiovascular disease monitoring, demonstrating low error rates and high peak detection rates, essential for continuous ECG monitoring at home. These findings suggest that home ECG devices can offer comparable accuracy and reliability to clinical ECG systems, providing valuable insights for patient self-monitoring and telemedicine applications.
What are the key design considerations for implementing RTL (Receive-Only) components in Doppler weather radar systems?
5 answers
Key design considerations for implementing RTL (Receive-Only) components in Doppler weather radar systems include optimizing the location of the radar system to mitigate clutter effectively, utilizing RF Front End modules operating in the S Band with specific characteristics like gain, noise figure, and dynamic range, and exploring advanced technologies like Solid State Weather Radar (SSWR) systems for minimal environmental impact and cost reduction. Additionally, in SSWR systems, accurate estimation of reflectivity for each polarization, reducing blind range, and joint design techniques for transmit waveforms and receive filters are crucial aspects that impact system performance and efficiency. By considering these factors, Doppler weather radar systems can enhance their functionality, accuracy, and sustainability in monitoring weather conditions.
What is chemiluminesence?
5 answers
Chemiluminescence is a luminescence phenomenon resulting from a chemical reaction, emitting photons. It serves as a valuable analytical tool in various fields like biotechnology, pharmacology, and environmental analysis due to its high sensitivity, specificity, and lack of background signal. Techniques like chemiluminescence detection methods and devices have been developed to enhance accuracy and efficiency in applications such as tip loading judgment and detection speed improvement. Novel systems incorporating organic semiconductor polymer nanoparticles and manganese compounds have been designed to generate strong chemiluminescence for improved detection accuracy. Researchers have explored methods like filter-intensified fiber-based endoscopes to capture combustion radicals in flames under varying conditions, enhancing insights into flame physics.
What factors are most important in optimizing electroporation?
5 answers
Optimizing electroporation involves considering various crucial factors. The choice of electrode characteristics and stimulating waveforms significantly impacts the efficiency of electroporation procedures. Parameters such as the electroporation medium, cell type, and properties of the nucleic acid to be transfected play vital roles in determining the success of gene electrotransfer (GET). For primary human T cell engineering, factors like the strength of the external electric field, cell stimulation, DNA concentration, and cell viability post-electroporation are key considerations for enhancing transfection efficiency. Understanding the relationship between electrical parameters, such as electric field strength, pulse width, and rise-time, is essential for effective electroporation, as these factors influence transmembrane voltage and pore formation. By optimizing these factors, researchers can improve the outcomes of electroporation procedures in various applications.
How to elevuate the BPD and HC in ultrasound for obstetric?
5 answers
To evaluate biparietal diameter (BPD) and head circumference (HC) in ultrasound for obstetrics, various methods are employed. One approach involves utilizing a multi-task deep convolutional neural network for automatic segmentation and estimation of HC and BPD with high accuracy and reliability. Additionally, studies suggest that male fetuses tend to have significantly larger HC and BPD measurements compared to female fetuses, with these differences increasing as gestational age advances. Furthermore, in cases of breech presentation, it is noted that BPD measurements are significantly lower compared to HC and femur length, emphasizing the importance of considering fetal position in ultrasound biometry. Doppler ultrasound, specifically assessing Doppler indices like pulsatility index (PI) and resistive index (RI) in high-risk pregnancies, can provide valuable insights into fetal outcomes, aiding in the early identification of adverse events.
Can pahsed array ultrasoninc system be used for concrete specimens?
5 answers
Yes, phased array ultrasonic systems can be effectively utilized for inspecting concrete specimens. Different studies have highlighted the significance of ultrasonic techniques in detecting various defects in concrete structures. These systems offer advantages such as improved imaging capabilities, enhanced defect visualization, and better accuracy in identifying defects like delamination, cracks, voids, and grouting issues within concrete elements. Researchers have developed specialized low-frequency array transducers to enhance sensitivity to crack-type defects, demonstrating clear visualization of defects that were challenging to detect with traditional methods. Additionally, innovative algorithms like the Uniform Manifold Approximation and Projection (UMAP) have been successfully applied to ultrasonic testing for concrete, showcasing superior data separation between healthy and damaged sections. Overall, phased array ultrasonic systems prove to be valuable tools for non-destructive testing and monitoring of concrete structures.
What is the prevalnce of zinc deficieny in audlts in Australia?
5 answers
The prevalence of zinc deficiency in adults in Australia is not explicitly mentioned in the provided contexts. However, studies have highlighted the importance of zinc in various age groups, including children and adolescents. Research has shown that zinc is essential for normal growth, metabolism, and cardiometabolic health. Additionally, studies have indicated that zinc supplementation may help prevent episodes of diarrhea and improve growth in children aged 6 months to 12 years. Furthermore, investigations into the relationship between serum zinc levels and glycemic status in a regional Australian hospital population have suggested that low serum zinc status in diabetics and prediabetics may play a role in insulin resistance pathogenesis. These findings underscore the significance of adequate zinc intake across different age groups for overall health and well-being.
Ambient Noise Tomography Borneo
5 answers
Ambient noise tomography has been utilized in various regions to study the subsurface structures. In Borneo, studies have been conducted to understand the effects of subduction termination on the crustal shear wave velocity structure using ambient noise tomography techniques. Additionally, the application of ambient noise tomography has been extended to monitor landslides and unstable slopes in remote mountainous areas, allowing for the imaging of complex geological structures with dense arrays of seismic stations. Furthermore, advancements in ambient noise tomography methods have enabled the development of workflows for attenuation tomography, overcoming challenges related to amplitude reliability and utilization in seismic tomography. These studies showcase the versatility and effectiveness of ambient noise tomography in characterizing subsurface features and seismic properties in different geological settings.
How has artificial intelligence technology been applied to the study and understanding of black holes?
5 answers
Artificial intelligence (AI) has been extensively utilized in the study of black holes. In the context of supermassive black holes and the Event Horizon Telescope (EHT) targets Sgr A* and M87*, a random forest machine learning model was trained on polarimetric observables to infer black hole parameters like spin and inclination. Additionally, neural network models have been developed to predict black hole mass using AGN samples, showcasing higher accuracy compared to traditional methods. Moreover, a deep-learning AI model has been created to forecast the late-inspiral, merger, and ringdown of binary black hole mergers, achieving high accuracy in waveform prediction. AI algorithms like Convolutional Neural Networks (CNN) and Light Gradient Boosting Machine (LightGBM) have also been employed to determine impact parameters in heavy-ion collisions, showcasing improved accuracy in inferring crucial physical quantities.