<?xml version='1.0' encoding='UTF-8'?><?xml-stylesheet href="http://www.blogger.com/styles/atom.css" type="text/css"?><feed xmlns='http://www.w3.org/2005/Atom' xmlns:openSearch='http://a9.com/-/spec/opensearchrss/1.0/' xmlns:georss='http://www.georss.org/georss' xmlns:gd='http://schemas.google.com/g/2005' xmlns:thr='http://purl.org/syndication/thread/1.0'><id>tag:blogger.com,1999:blog-21528933</id><updated>2011-04-21T16:11:31.345-07:00</updated><title type='text'>wall thickness measurement robot</title><subtitle type='html'></subtitle><link rel='http://schemas.google.com/g/2005#feed' type='application/atom+xml' href='http://liatshoef.blogspot.com/feeds/posts/default'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/21528933/posts/default?max-results=100'/><link rel='alternate' type='text/html' href='http://liatshoef.blogspot.com/'/><link rel='hub' href='http://pubsubhubbub.appspot.com/'/><author><name>Liat Shoef Gombo</name><uri>http://www.blogger.com/profile/02766810741826485655</uri><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='24' height='32' src='http://photos1.blogger.com/blogger/5259/2178/1600/liat.jpg'/></author><generator version='7.00' uri='http://www.blogger.com'>Blogger</generator><openSearch:totalResults>4</openSearch:totalResults><openSearch:startIndex>1</openSearch:startIndex><openSearch:itemsPerPage>100</openSearch:itemsPerPage><entry><id>tag:blogger.com,1999:blog-21528933.post-113825922121780894</id><published>2007-02-27T22:28:00.000-08:00</published><updated>2006-05-17T10:57:04.286-07:00</updated><title type='text'>Wall Thickness Measurement Robot</title><content type='html'>&lt;div align="center"&gt;&lt;span style="font-family:arial;"&gt;&lt;strong&gt;רובוט לבדיקת עובי הדופן&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:85%;"&gt;&lt;span style="font-family:arial;"&gt;&lt;strong&gt;AFEKA PR ME DE LS&lt;/strong&gt; &lt;a href="javascript:grec(" urg="LCC&amp;urS=TA!!!9!?')&amp;quot;"&gt;TA 9 Engineering Dictionaries&lt;/a&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:Arial;font-size:85%;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-size:100%;"&gt;&lt;span style="font-family:arial;"&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:arial;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:arial;"&gt;&lt;strong&gt;הוגש ע"י&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-size:100%;"&gt;&lt;span style="font-family:arial;"&gt;&lt;span style="font-size:100%;"&gt;ליאת שואף גומבו ,עבודת גמר ב &lt;/span&gt;&lt;a href="http://www.afeka.ac.il/"&gt;&lt;span style="font-size:100%;"&gt;אפקה המכללה האקדמית להנדסה בת"א&lt;/span&gt;&lt;/a&gt;&lt;span style="font-size:100%;"&gt; , &lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-size:100%;"&gt;&lt;span style="font-family:arial;"&gt;&lt;span style="font-size:100%;"&gt;הנדסת מכונות &lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="left"&gt;&lt;span style="font-size:85%;"&gt;&lt;span style="font-family:arial;"&gt;&lt;span style="font-size:100%;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="left"&gt;&lt;span style="font-family:arial;"&gt;&lt;strong&gt;Submitted by&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="left"&gt;&lt;span style="font-family:arial;"&gt;Liat Shoef Gombo, Final Project -Mechanical Engineering&lt;/span&gt;&lt;/div&gt;&lt;div align="left"&gt;&lt;span style="font-family:arial;"&gt;&lt;a href="http://www.esefer.net/www.afeka.ac.il"&gt;AFEKA Tel-Aviv academic college of engineering&lt;/a&gt; &lt;/span&gt;&lt;/div&gt;&lt;div align="left"&gt;&lt;span style="font-family:Arial;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:arial;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:arial;"&gt;&lt;strong&gt;מנחה&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:arial;"&gt;ד'ר משה תשובה &lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt; &lt;/div&gt;&lt;div align="left"&gt;&lt;span style="font-family:arial;"&gt;&lt;/div&gt;&lt;/span&gt;&lt;div dir="rtl" align="right" akign="right"&gt;&lt;span style="font-family:arial;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;table&gt;&lt;tbody&gt;&lt;tr&gt;&lt;p align="right"&gt;&lt;span style="font-family:arial;"&gt;&lt;/span&gt;&lt;p&gt;&lt;p&gt;&lt;/p&gt;&lt;td&gt;&lt;p align="right"&gt;&lt;br /&gt;&lt;span style="font-family:arial;"&gt;&lt;br /&gt;&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;td&gt;&lt;p align="right"&gt;&lt;br /&gt;&lt;span style="font-family:arial;"&gt;&lt;br /&gt;&lt;/span&gt;&lt;span style="font-family:arial;"&gt;&lt;strong&gt;&lt;br /&gt;מילות מפתח&lt;/strong&gt;&lt;/span&gt;&lt;/p&gt;&lt;div align="right"&gt;&lt;span style="font-family:Arial;"&gt;בדיקת עובי הדופן &lt;a href="http://foldoc.doc.ic.ac.uk/foldoc/foldoc.cgi?query=robot&amp;action=Search"&gt;רובוט&lt;/a&gt; &lt;/span&gt;&lt;/div&gt;&lt;div align="left"&gt;&lt;span style="font-family:Arial;"&gt;&lt;strong&gt;Keywords&lt;/strong&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="left"&gt;&lt;span style="font-family:Arial;"&gt;RCX LEGO &lt;a href="http://mindstorms.lego.com/eng/default.asp"&gt;MindStorm&lt;/a&gt; &lt;a href="http://foldoc.doc.ic.ac.uk/foldoc/foldoc.cgi?query=usb&amp;amp;action=Search"&gt;USB&lt;/a&gt; &lt;a href="http://foldoc.doc.ic.ac.uk/foldoc/foldoc.cgi?query=Infra+Red+"&gt;Infra Red &lt;/a&gt;Motion Detection &lt;a href="http://foldoc.doc.ic.ac.uk/foldoc/foldoc.cgi?MATLAB"&gt;MATLAB&lt;/a&gt; &lt;a href="http://www.oreillynet.com/pub/a/network/2000/02/25/mindstorms/NQC.html"&gt;NQC&lt;/a&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Arial;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;div align="right"&gt;&lt;span style="font-family:Arial;"&gt;&lt;/span&gt;&lt;/div&gt;&lt;/td&gt;&lt;p&gt;&lt;/p&gt;&lt;/tr&gt;&lt;/tbody&gt;&lt;/table&gt;&lt;span style="color:#ffffff;"&gt;afekaproject7////0&lt;/span&gt;&lt;div class="blogger-post-footer"&gt;&lt;img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/21528933-113825922121780894?l=liatshoef.blogspot.com' alt='' /&gt;&lt;/div&gt;</content><link rel='replies' type='application/atom+xml' href='http://liatshoef.blogspot.com/feeds/113825922121780894/comments/default' title='Post Comments'/><link rel='replies' type='text/html' href='http://www.blogger.com/comment.g?blogID=21528933&amp;postID=113825922121780894' title='0 Comments'/><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/21528933/posts/default/113825922121780894'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/21528933/posts/default/113825922121780894'/><link rel='alternate' type='text/html' href='http://liatshoef.blogspot.com/2007/02/wall-thickness-measurement-robot.html' title='Wall Thickness Measurement Robot'/><author><name>Liat Shoef Gombo</name><uri>http://www.blogger.com/profile/02766810741826485655</uri><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='24' height='32' src='http://photos1.blogger.com/blogger/5259/2178/1600/liat.jpg'/></author><thr:total>0</thr:total></entry><entry><id>tag:blogger.com,1999:blog-21528933.post-113826064541705161</id><published>2007-01-24T23:27:00.000-08:00</published><updated>2006-05-17T10:48:34.036-07:00</updated><title type='text'>תקציר</title><content type='html'>&lt;div dir="rtl" align="right"&gt;&lt;span style="font-family:arial;"&gt;בעלי מיכלים לאגירת נוזלים ודלקים, מחויבים על פי התקנים (כמו API653 ) לבצע בדיקות&lt;br /&gt;תקופתית של עובי דופן המכלים וזאת בכדי להעריך את אורך החיים שלהם ולמנוע קריסת מיכל תוך סיכון בני אדם וציוד, אבדן החומר שבמיכל וזיהום הקרקע והסביבה.&lt;br /&gt;המערכת מיועדת למשתמשים שהם בעלי מיכלים אנכיים אשר מכילים סוגים שונים של תכולה, לבדיקת מתקנים באווירה רדיואקטיבית או בסביבה שאינה תומכת חיים. לאחר הסבה מתאימה, יכולה לפעול בבדיקת מתקנים תת ימיים.&lt;br /&gt;כיום נעשית בדיקת עובי הדופן על ידי טכנאים אשר נושאים בידם את הציוד הנדרש לאזור הבדיקה. אזורי הבדיקה הם בדרך כלל מקומות שלא נוח ללכת בהם. המקומות נמצאים על גבי מכלים, צינורות וקורות, תוך כדי צורך באמצעי הרמה או פיגומים כדי שיאפשרו לבודקים לבצע את הבדיקה.&lt;br /&gt;מטרת הפרויקט היא לפתח רובוט אשר יהיה מבוקר ויופעל מרחוק מקרבת מקום הבדיקה. הוא יונע ויעשה את הבדיקה במקום הרצוי מבלי שיצטרכו לטפס ולשאת את הציוד לאזור הבדיקה.&lt;br /&gt;התכנון ובנית האבטיפוס תעשה תוך בחינת חלופות הנדסיות וכדאיות כלכלית.&lt;br /&gt;בכדי שנוכל לענות לכול צרכי הבדיקה נבחנו האמצעים לביצועה, משקל מכשיר המדידה, מערכות המדידה הנוספות כמו מערכת הוספת הצימוד והגשש, הפלטפורמה, בחירת אמצעי הנעה ומערכת הבקרה.&lt;br /&gt;בפרויקט זה בוצעה בחירת חלקי הרובוט וחלקים אשר ישמשו לביצוע בדיקת עובי הדופן ועל פיהם תוכננה המערכת כולה. נערכו חישובים של משקל חלקי המערכת, חושב החיכוך במערכות השונות.  מהירות המערכת ותאוצתה נקבעו. המנוע  נבחר וחושב הסל"ד והספק המנוע.&lt;br /&gt;המסקנה המתקבלת מפרויקט זה היא שהאבטיפוס הינו מציג טכנולוגיות טוב אשר יכול לשמש כשלב הראשון לקראת פיתוח מערכת תעשייתית.&lt;/div&gt;&lt;/span&gt;&lt;div class="blogger-post-footer"&gt;&lt;img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/21528933-113826064541705161?l=liatshoef.blogspot.com' alt='' /&gt;&lt;/div&gt;</content><link rel='replies' type='application/atom+xml' href='http://liatshoef.blogspot.com/feeds/113826064541705161/comments/default' title='Post Comments'/><link rel='replies' type='text/html' href='http://www.blogger.com/comment.g?blogID=21528933&amp;postID=113826064541705161' title='0 Comments'/><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/21528933/posts/default/113826064541705161'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/21528933/posts/default/113826064541705161'/><link rel='alternate' type='text/html' href='http://liatshoef.blogspot.com/2007/01/blog-post.html' title='תקציר'/><author><name>Liat Shoef Gombo</name><uri>http://www.blogger.com/profile/02766810741826485655</uri><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='24' height='32' src='http://photos1.blogger.com/blogger/5259/2178/1600/liat.jpg'/></author><thr:total>0</thr:total></entry><entry><id>tag:blogger.com,1999:blog-21528933.post-114788799414541871</id><published>2006-12-17T10:52:00.000-08:00</published><updated>2006-05-17T10:46:34.156-07:00</updated><title type='text'>Abstract</title><content type='html'>The industry, especially the chemical industry consists of piping, vessels, storage tanks, steel towers and others. These units were designed to hold certain pressure. Nevertheless, the corrosion and the erosion caused by the flow of the liquid lead to thinning of the wall thickness and to failure or collapse.&lt;br /&gt;In order to predict the remaining life of a component, the wall thickness should be measured periodically.&lt;br /&gt;The American Standard API 653 for Storage Tanks requires measurement every 5 years.&lt;br /&gt;Industrial components with hard access conditions exit also in nuclear power stations and reactors and in the marine installations, where the measurement has to be taken under the water.&lt;br /&gt;If the wall is too thin, a repair should be done.&lt;br /&gt;Today, technicians do wall thickness test in manual way while they need access to the testing location, sometimes by climbing or crawling, for attaching the transducer to the surface.&lt;br /&gt;The place is usually difficult for access or dangerous for a man to do the job.&lt;br /&gt;For overcome the approach problem, a robot has been designed for remote control, approaching the area in where the measurements have to be done, taking them and sending them back to the operator station.&lt;br /&gt;The design and the constructing of the robot have been done after examining engineering and economic alternatives.&lt;br /&gt;In order to meet all the requirements of the test, the means for the robot building have been evaluated as well as the weight of the measuring device, the auxiliary measuring systems such as the couplant applier and the sensor, the platform, the propulsion system and the control system.&lt;br /&gt;Calculations have been made to find the weight of the system, the friction forces of the different systems, the velocity and acceleration of the robot. The subassemblies of the system have been selected according the calculations above and the engine and its parameters such as the RPM and its power have been determined.&lt;br /&gt;The robot that was built in this project scope is for flat surface, normal environment, low velocity. The options for the vertical climbing have already been calculated and are an option for further development. For changing the robot for work in ex-proof conditions or underwater, major design changes should be made due to shielding or sealing needs, different electronic and electromechanic system and changing or removing the couplant system.&lt;br /&gt; The conclusions of this project are that the robot designed can be a successful technology demonstrator in order to continue with design of an industrial version of the system.&lt;div class="blogger-post-footer"&gt;&lt;img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/21528933-114788799414541871?l=liatshoef.blogspot.com' alt='' /&gt;&lt;/div&gt;</content><link rel='replies' type='application/atom+xml' href='http://liatshoef.blogspot.com/feeds/114788799414541871/comments/default' title='Post Comments'/><link rel='replies' type='text/html' href='http://www.blogger.com/comment.g?blogID=21528933&amp;postID=114788799414541871' title='0 Comments'/><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/21528933/posts/default/114788799414541871'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/21528933/posts/default/114788799414541871'/><link rel='alternate' type='text/html' href='http://liatshoef.blogspot.com/2006/12/abstract.html' title='Abstract'/><author><name>Liat Shoef Gombo</name><uri>http://www.blogger.com/profile/02766810741826485655</uri><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='24' height='32' src='http://photos1.blogger.com/blogger/5259/2178/1600/liat.jpg'/></author><thr:total>0</thr:total></entry><entry><id>tag:blogger.com,1999:blog-21528933.post-114841565442337040</id><published>2006-05-23T13:15:00.000-07:00</published><updated>2006-05-23T13:22:43.953-07:00</updated><title type='text'>איורים</title><content type='html'>&lt;div align="center"&gt;&lt;br /&gt;&lt;/div&gt;&lt;div dir="rtl" align="center"&gt;&lt;span style="font-family:arial;font-size:130%;"&gt;&lt;strong&gt;&lt;u&gt;איור המערכת&lt;/u&gt;&lt;/strong&gt;&lt;/span&gt; &lt;/div&gt;&lt;div align="center"&gt;&lt;a href="http://photos1.blogger.com/blogger/5259/2178/1600/????????????"&gt;&lt;img style="DISPLAY: block; MARGIN: 0px auto 10px; CURSOR: hand; TEXT-ALIGN: center" alt="" src="http://photos1.blogger.com/blogger/5259/2178/320/%3F%3F%3F%3F%3F%3F%3F%3F%3F%3F%3F%3F%20%3F%3F%3F%3F%3F%3F%3F%3F.jpg" border="0" /&gt;&lt;/a&gt;&lt;strong&gt; &lt;span style="font-family:arial;font-size:130%;"&gt;&lt;u&gt;המערכת הכוללת&lt;/u&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;/div&gt;&lt;div align="center"&gt;&lt;span style="font-family:arial;font-size:130%;"&gt;&lt;u&gt;&lt;img style="DISPLAY: block; MARGIN: 0px auto 10px; CURSOR: hand; TEXT-ALIGN: center" alt="" src="http://photos1.blogger.com/blogger/5259/2178/320/%3F%3F%3F%3F%3F%3F%3F%3F%3F%3F%3F%3F.jpg" border="0" /&gt; &lt;/u&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class="blogger-post-footer"&gt;&lt;img width='1' height='1' src='https://blogger.googleusercontent.com/tracker/21528933-114841565442337040?l=liatshoef.blogspot.com' alt='' /&gt;&lt;/div&gt;</content><link rel='replies' type='application/atom+xml' href='http://liatshoef.blogspot.com/feeds/114841565442337040/comments/default' title='Post Comments'/><link rel='replies' type='text/html' href='http://www.blogger.com/comment.g?blogID=21528933&amp;postID=114841565442337040' title='0 Comments'/><link rel='edit' type='application/atom+xml' href='http://www.blogger.com/feeds/21528933/posts/default/114841565442337040'/><link rel='self' type='application/atom+xml' href='http://www.blogger.com/feeds/21528933/posts/default/114841565442337040'/><link rel='alternate' type='text/html' href='http://liatshoef.blogspot.com/2006/05/blog-post.html' title='איורים'/><author><name>Liat Shoef Gombo</name><uri>http://www.blogger.com/profile/02766810741826485655</uri><email>noreply@blogger.com</email><gd:image rel='http://schemas.google.com/g/2005#thumbnail' width='24' height='32' src='http://photos1.blogger.com/blogger/5259/2178/1600/liat.jpg'/></author><thr:total>0</thr:total></entry></feed>
