Top PDF Semi-automatic system for ultrasonic measurement of texture

Semi automatic system for ultrasonic measurement of texture

Semi-automatic system for ultrasonic measurement of texture

A means and method for ultrasonic measurement of texture non-destructively and efficiently. Texture characteristics are derived by transmitting ultrasound energy into the material, measuring the time it takes to be received by ultrasound receiving means, and calculating velocity of the ultrasound energy from the timed measurements. Textured characteristics can then be derived from the velocity calculations. One or more sets of ultrasound transmitters and receivers are utilized to derive velocity measurements in different angular orientations through the material and in different ultrasound modes. An ultrasound transmitter is utilized to direct ultrasound energy to the material and one or more ultrasound receivers are utilized to receive the same. The receivers are at a predetermined fixed distance from the transmitter. A control means is utilized to control transmission of the ultrasound, and a processing means derives timing, calculation of velocity and derivation of texture characteristics.
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Analysis of a Semi Automatic System for the Ultrasonic Measurement of Texture

Analysis of a Semi Automatic System for the Ultrasonic Measurement of Texture

Comparison to evaluation of the systematic errors between ultrasonic and diffraction determinations of ODC's establish that the accuracy of the semi-automatic system does not limit the i[r]

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Method of ultrasonic measurement of texture

Method of ultrasonic measurement of texture

A method for measuring texture of metal plates or sheets using non-destructiveultrasonic investigation includes measuring the velocity of ultrasonic energy waves in lower order plate modes in one or more directions, and measuring phase velocity dispersion of higher order modes of the plate or sheet if needed. Textureor preferred grain orientation can be derived from these measurements with improves reliability and accuracy. The method can be utilized in production on moving metal plate or sheet.

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Method of ultrasonic measurement of texture

Method of ultrasonic measurement of texture

A method for measuring texture of metal plates or sheets using non-destructive ultrasonic investigation includes measuring the velocity of ultrasonic energy waves in lower order plate modes in one or more directions, and measuring phase velocity dispersion of higher order modes of the plate or sheet if needed. Texture or preferred grain orientation can be derived from these measurements with improves reliability and accuracy. The method can be utilized in production on moving metal plate or sheet.

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Ultrasonic Measurement of Texture of Cubic and Hexagonal Materials

Ultrasonic Measurement of Texture of Cubic and Hexagonal Materials

However, W400 must be determined from absolute measurements of So or SHo wave velocities, hence the errors associated with the estimates are larger compared to those ofW420 and W440· A c[r]

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Means and method for ultrasonic measurement of material properties

Means and method for ultrasonic measurement of material properties

The system for field measurement of texture, stress and related material properties such as formability parameters using ultrasonic velocity measurements through crystalline plate or sheet. Electromagnetic acoustic transducers are utilized to generate, transmit, and receive ultrasonic bursts through the plate at different angular orientations with respect to the plane of the plate. Two of the transducers are driven in series when generating the ultrasonic bursts. Time measurements between transmission and reception of the bursts are precisely derived and converted into velocities. Information regarding stress, texture, and other related material properties such as formability parameters can be derived from these velocity measurements. The system is adjustable to be used for both ferrous and nonferrous crystalline plate. Alteration of the types of ultrasonic waves utilized, and the methods of generating the waves allows different properties such as texture and stress to be derived.
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A Semi Automatic Indexing System for Cell Images

A Semi Automatic Indexing System for Cell Images

A DVANCES in microscopy and related image analysis techniques is enabling molecular biologists and others to visualise molecular and morphological events inside cells and tissues [1]. High content screening (HCS) systems [2], comprising high-magnification fluorescent microscopy sys- tems and sophisticated image processing/analysis techniques [3], facilitate the ‘measurement of changes in objects locations, intensity, texture or shape, thereby enabling the analysis of more subtle and physiological relevant cellular events such as cell or protein movements, shape changes or protein modifica- tion’ [4]. HCS systems are particularly important for the study of ‘responses to chemical or genetic perturbations within the context of the inter-cellular structure and functional networks of individual normal or diseased cells’ [1]. HCS systems are critical to the needs of both the academic and pharmaceutical research in that these systems facilitate the measurement of cytological changes, the selection of cell populations, and facilitate the combination of the measures related to the various components of a cell, for example the cell nucleus structure and the chromatin structure [3].
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Development of Thickness Measurement System for Hot Steel with Laser Ultrasonic Wave Technology

Development of Thickness Measurement System for Hot Steel with Laser Ultrasonic Wave Technology

The ultrasonic wave is fi nally attenuated after re fl ecting from bottom to surface of the objects repeatedly. The wave causes the surface of the objects to vibrate. The vibration can be detected with a laser interferometer. Speckle interference (Fig. 2) 11­13) is adopted in this experiment. Speckle pattern appears as reflection when laser beam is irradiated on the objects. The pattern is different before and after vibration (Fig. 3). 14) As the pattern is less susceptible to surface texture of the objects than fringes used in general interferometer such as Fabry-Perot, it is easier to detect vibration on even hot rolled steel surface.
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High frequency ultrasonic characterization of carrot cell texture

High frequency ultrasonic characterization of carrot cell texture

The experimental setup consisted of a clear vertical jar. For measurements, this jar is filled with filtered water. Mounted at opposite ends of the jar were a pair of flat plane 5MHz ultrasound transducers. The transmitti transducer was a Panametrics: 5.0/.25, 113542; the receiving transducer, Panametrics V326, 5.0/.375, 9392 Diagram #2 shows the rest of the laboratory setup. For imaging, a sample is secured between the transducers. Fo this research, the signal generator (Polynomial Waveform Synthesizer, Model 2020) was programmed to produce a chirp function, using the following function: For 5u SIN(INT(1.5M+1.3M/1u*t)) FOR 5 m 0. This creates a chirp function scan a frequency range of about 1MHz to 9 MHz, centered at the transducers peak sensitivity, 5MHz. This signal is first sent through a (EIN Model 240L RF) power amplifier, then through the transducer. Next, the signal propagates through the longitudinal axis of the sample in the jar setup, and is capture by the receiving transducer. It is then amplified by a receiving amplifier (RITEC Broadband Reciever BR-640 where the system gain (in dB) can be manually adjusted. Before getting stored to disk, the output signal is digitized to 9 bits using a Data 6500 Digitizer. For all the measurements taken below, the output signals we sampled for 256 points, in 50 ns intervals (as explained above). In addition, the receiver gain for each measurement was recorded, for use in mathematical calculations as stated earlier.
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The individual and the system : Assessing the stability of the output of a semi-automatic forensic voice comparison system

The individual and the system : Assessing the stability of the output of a semi-automatic forensic voice comparison system

However, speakers with high mean F3 values were more variable in terms of their SS LLRs. This may be due to the fact that we used the same default settings for formant extraction in the Snack Toolkit [17], with an LPC order of 12 and tracking four formants, for all speakers across all conditions. Although choosing system-level settings is the approach that has been followed in previous studies [5,6,7], it may have led to measurement issues here. Speakers with inherently high F3 are more likely to have F4 values close to or outside the upper bandpass threshold for telephone transmission. This is likely to cause F3 measurement errors, despite the fact that F3 itself isnÕt close to the bandpass threshold. This suggests, in line with [26], that it may be necessary to use channel- and speaker-specific (and possibly also vowel-specific) formant settings to help reduce the effect of channel mismatch and potentially improve overall system performance. This is something we intend to investigate in future work.
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Automatic Ultrasonic Testing of Materials with Neural Network

Automatic Ultrasonic Testing of Materials with Neural Network

One of the most applicable methods in the field of non-destructive testing is ultrasonic flaw inspection of materials. The foundation for ultra­ sonic testing of material is based on the recep­ tion of the high frequency sound wave which is reflected from the obstacles in the material. The magnitude of the defect and the degree of the critical state can be determined by an experienced operator according to the signal image observa­ tions, special diagrams and tables. So the aim of automatic testing is to replace manual examina­ tion and intuitive decision — making w ith a com­ puter decision system (Fig. 1). The main task is the automatic characterisation of expected defects,
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A Semi-automatic System for Conceptual Annotation, its Application to Resource Construction and Evaluation

A Semi-automatic System for Conceptual Annotation, its Application to Resource Construction and Evaluation

The C ONCERTO KESE provides a flexible architecture, in which it is possible to cater for a wide variety of document management tasks, including linguistic corpus management. Although that was not its primary objective, it is one of the ways in which it will be exploited by some of the partners. This is made possible by two key aspects of the design of the C ONCERTO KESE. The first is that, recognizing the limitations of robust linguistic analysis, the system was always intended to rely on manual intervention to complete the annotation of textual data for storage in its conceptual knowledge base. The second is that the knowledge base management system is designed to cater for XML-encoded document annotations, in which the conceptual content of documents can be captured and queried. The two commercial pilot applications are primarily concerned with the semantic content of the documents, but within the project, linguistic analysis at lower levels precedes semantic annotation, and such annotations can also be stored in the system’s repositories.
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A Proposed Design of Semi Automatic Cleaning System for High Power Transmission Line

A Proposed Design of Semi Automatic Cleaning System for High Power Transmission Line

Our system contains four major parts, Base Gripper, Lead Screw, Washer Base, and Microfiber Roller. We designed base gripper that will grip the bottom of the insulator. Base gripper itself Contain 5 parts , Spring Plate, Spring , Spring Plate tightening nut & bolt, Stepper motor, DC geared motor, Embedded system shown in fig.4, with it’s bill of material in fig.6 Spring plate with combined use of spring and tightening nut and bolt as shown in fig.5, is used to gripe the insulator’s base of various diameters. As the stepper motor rotates around the base of insulators the spring will compressed if the diameter of insulator is more than the its inner gap and if base diameter of insulator is less the spring will decompress And force the spring plate to grip the base. Assembly of base gripper is shown below. Dc motor in the base gripper will rotor the lead screw mounted on the base gripper fitted with collars. Due to rotation of the lead screw washer assembly will move up and down, this one is like simple nut and bolt type mechanisms.
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Automatic Braking System Using Ultrasonic Sensor

Automatic Braking System Using Ultrasonic Sensor

ABSTRACT:- When compared with olden days life span of human is reduced. Death rate due to accident is drastically increased because vehicles usage is increasing by day by day. Due to brake failure so many accidents are occurring so when we control the brake by automatically we can reduce the effect of accident. A Ultrasonic setup is placed in front of vehicle and that setup consists of an emitter and a receiver. Ultrasonic emitter always emits the ultrasonic waves, whenever a obstacle is detected then wave gets reflected and receiver receives the signal. Reflected wave sends the signal to the Aurduino Nano from that based upon distance of object it actuates the buzzer or brakes. Brakes are actuated by using Solenoid valve. Solenoid valve operated by electrical signal and it actuates brakes by using pneumatics. UBS car provides the glimpse into the future of automotive safety. By UBS system we can prevent more accidents and save more lives.
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Component Measurement using Ultrasonic Sensor

Component Measurement using Ultrasonic Sensor

The instrument consists of two modules, first is known as main working module and second is known as measuring module. The main working module and measuring module, both are made of acrylic material. The main working module housing consists of ultrasonic sensor, arduino board, LCD display and set of wires. On measuring module two passages are made to measure diameter/width and length of component. In length measuring passage component is first kept and slider is moved till it touches top of component, then component is removed (component restricts the sound waves passing to slider) and measured value is noted down. Same procedure can be used for measuring diameter/width, but instead of placing component in length passage it is kept in diameter passage. If component have approximately same diameter/width and length, it can be kept in any passage. 7. OBSERVATIONS
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Semi-automatic method of preparing

Semi-automatic method of preparing

In the input subject string IV (See Sec 21, Step 4) the terms are replaced by the numerical code provided taken from the computer readable term-code dictionary (See sec 2 1 ).. At th[r]

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ECCENTRIC CAM OPERATED SEMI AUTOMATIC GEAR SHIFTING SYSTEM FOR TWO WHEELER

ECCENTRIC CAM OPERATED SEMI AUTOMATIC GEAR SHIFTING SYSTEM FOR TWO WHEELER

In this study, a gear shifting mechanism was designed and applied to make the shifting process faster and less destructible for the driver. The main objective of this concept is used to apply the gear by using automation system in automobile vehicles. This is the new innovative model mainly used to control the vehicle. Here, we are concentrating to design the automatic gear changing mechanism in two wheeler vehicles by using the electronic devices. This is very useful for the gear changing mechanism in automobile vehicles. By using this we can easily control the vehicle and improve the performance of the vehicle also we can avoid the wear and tear of the gear. Here, we are using eccentric cam to change the gears for two wheelers. By using this eccentric cam operation, we can eliminate the more disadvantages in gear changing system. By using this system, we can reduce space of locating gear box, gear damage, bleeding of pneumatic and hydraulic energy flow tubes, less noisy operation, less cost and doesn’t require frequent maintenance. Keywords: Eccentric Cam with follower, Microcontroller (MC), AC and DC motor, push buttons.
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Semi Automatic Clutch in Heavy Vehicles

Semi Automatic Clutch in Heavy Vehicles

Implementing this project will be economically feasible and hence it will be affordable for any kind of the manufacturers to implement this system in the automobiles. Hence source of this project is pneumatic supply which is used for actuation in which the compressor is readily available in vehicle itself therefore the cost of this project is reduced considerably. A cylinder attached with the links is used for the actuation of the clutch which is less cost and this project is much efficient and it is economically feasible.

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Ultrasonic Methods of Texture Monitoring for Characterization of Formability of Rolled Aluminum Sheet

Ultrasonic Methods of Texture Monitoring for Characterization of Formability of Rolled Aluminum Sheet

Relative velocity measurements were used to obtain W 4 20 and W440; absolute velocities were measured to obtain W400' Values of w4 20 and W440 as measured by relative velocity techniques[r]

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