1989 Cilt 3 Sayı 1
Permanent URI for this collectionhttps://hdl.handle.net/11452/31754
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Item A study on radial deformation in journal bearing(Uludağ Üniversitesi, 1989) Güllü, Emin; Ülkü, Sedat; Mühendislik FakültesiIn this study, aiming to achieve a more accurate analyse of perfomance radial journal bearings, the effects of shaft and liner deformations have been considered together. If length/diameter ratio is quite small the results given confirm well with those obtained in practice. When this ratio is high, however, deteriorations in the shaft deflection or linersgeometry with be more effective than expected radial deformations. ·Item The inversion method in quasi-optical scattering of electromagnetic waves from perfectly conducting curved surfaces(Uludağ Üniversitesi, 1989) Bayrakçı, Engin; Mühendislik Fakültesi; Elektronik Mühendisliği BölümüIn this study (E, H) fields have been calculated by applying the inversion method on the ray paths in the quasi-optical seattering phenomena of infinite and· finite sourred elettromagnetic waves from perfectly conducting curved surfaces.Item Optik gibi saçılmanın düzlemsel dalga spektrumu(Uludağ Üniversitesi, 1989) Bayrakçı, H. Ergün; Mühendislik Fakültesi; Elektronik Mühendisliği BölümüThe reflection field resulted from the quasi optic scattering of the electromagnetic waves from the perfectly conducting smooth convex curved surfaces is found as the spectrum integral of plane waves. As for the diffracted field, the physical inversion is defined with the two folded spectrum integrals and the geometrical inversion is defined by the in verse of the circles. The spectrum integrals are calculated by the method of the steepest descents of the integration path.Item İki eksenli eğilme etkisindeki dikdörtgen kesitli kısa betonarme kolonların boyutlandırılması(Uludağ Üniversitesi, 1989) Saylan, Şerif; Balıkesir Mühendislik FakültesiA computer program was written for the analytical solutions of the short rectangular reinforced concrete columns under axialload together with bending mo ments about both of the principal axes of the columns using the ultinıate strength method. The different properties of the columns dimensions and materials used are considered in the analysis of the columns with this program. Solutions with this program is easier, errors are control/ed and also saves time. Results of a few problems which were solved by other methods using the charts were compared with the results of the preseni study.Item Profesör Lütfullah Ulukan'a armağan(Uludağ Üniversitesi, 1989) Babalık, Fatih C.; Mühendislik FakültesiÜniversiteler kanunlar, yönetmeliklerle idare edildiği kadar, kuruluşlarından itibaren yerleşmeye başlayan ve yıllar hatta yüz yıllar boyu oluşan akademik töreleriyle yönlendirilir. Türk Üniversiteleri, kuruluşları 5-6 asır gerilere giden tanınmış, köklü batı üniversitelerinin yanında çok genç üniversitelerdir. İstanbul Üniversitesi ve İstanbul Teknik Üniversitesi dışındaki Üniversitelerimiz yüz yılı hatta elli yılı doldurmamışlardır .Item Tabii mağaraların soğuk depoculuk ve klimatizasyonda değerlendirilmesı(Uludağ Üniversitesi, 1989) Savaş, Sabri; Uzun, Mehmet; Mühendislik FakültesiIn this study, at first the cold storage and climatization evaluation of the na tural cavems is investigated. For this purpose, first of an air specifications of the ca vem was considered and evaluations has done according to ascertion specifications of the cavem investigation region. After that the opinions improved which are based on the theories of the cold storage and climatization evaluation subject of the caverns.Item Optimization of the arrays of impinging air jets(Uludağ Üniversitesi, 1989) Can, Muhittin; Mühendislik FakültesiUse of impinging air jets to enhance heat and mass transfer rates is relatively new development in heatin& cooling and dlying operations in industry. In this paper, an original optimization of nozzle arrays under impinging air jets was given for both academic and industrial users.Item Çarpan hava jetleri ile ince mürekkep filmlerinin kurutulması(Uludağ Üniversitesi, 1989) Feralan, A. Erdal; Yamankaradeniz, Recep; Can, Muhiddin; Mühendislik FakültesiHigh velocity impinging air jets are widely used in industry, for heating, cooling, drying ete, because of the high heat and mass transfer rates which are develo ped in the impingement region. In this study, to provide data for dryer designers aprogramme of research has been implemented to study the heat and mass transfer processes which under/ie the drying of thin ink films. The ink drying process is des eribed and drying curves for an ink based on a single solvent are presented. Experimentally detennined drying times are compared with those calculated nurnericalIy using established heat and mass transfer theory.Item Katı modelleme ile imalat hatalarının tespiti(Uludağ Üniversitesi, 1989) Çakır, M. Cemal; Mühendislik FakültesiIn this paper some newly devised automatic methods are deseribed that compare a set of measurements of an engineering component taken by a coordinate measuring machine with a master solid model of the measured component obtained from a CAD system. Once matched, the two may then be compared to find any differences resulting from manufacturing errors and those manufacturing errors can automaticalJy be reported. The algorithms used in the project have been developed especially to handle the large numbers of surface points that m ay be gathered from a component using a laser non-contact measuring machine developed at Bath University. The set theoretic solid modeller DORA used in the project is also developed at Bath University by John Woodwark.Item Makine mühendisliği eğitiminde bilgisayar destekli çizim(Uludağ Üniversitesi, 1989) Öztürk, Ferruh; Mühendislik FakültesiIn this paper, the changes which must be done in mechanical engineering education specially in CAD (Computer Aided Design) are outlined. Computer techniques and their applications are becoming more and more important in mechanical engineering applications. To eliminate the inefficiencies of traditional education and to satisfy the requirement of this computer age some proposals and en lightments about CAD are given. The main srope of this paper is how best to use the computers to satisfy the CAD applications and also to introduce the new to design and manufacturing techniques to mechanical students.Item Ein vorschlag zur praktischen-quantitativen ermittlung der komponentenanteile einer kristallmischung durch die auswertung von debye-scherrer aufnahmen(Uludağ Üniversitesi, 1989) Demirci, A. Halim; Mühendislik FakültesiEs wurde hier ein Auswerteverfahren gegeben, das es gestattet, anlıaııd der Debye-Sehe"er Aufııalımen polykristalliııen Werkstoffe nach ihren Substanzen und deren quantitativen Anteilen in der Zusammensetzung, gegenüber dem zeitaufwen digen Verfahren, auf praktischem Wege zu analysieren. Das vorgesclılagene Verfah: ren hat keinen Anspruch auf eine holıe Messgenauigkeit. Vıelmelir soll es bei der Verfolgımg eines bestimmten werkstoffkundlichen Prozesses wie die Anteilbestim mung einer. Besclıichtung sowie der Versclheissprodukte in eitıem Reibungssystem in Abhangigkeit von Versuchsbedilıgungen, wegen seiner sehr praklisehen und syste matisclıen Einsetzbarkeit vorgezogen werden.Item Teknik kuru sürtünmeli ötektoidaltı çelik/çelik sisteminde aşınma dayanımı yüzey bölgesi sertliği ve % c-ilişkisi(Uludağ Üniversitesi, 1989) Demirci, A. Halim; Mühendislik FakültesiAşınma miktarının sertlik ve C-Oranına bağlı olarak değişimi peritaltı alaşımsız çelik malzeme çiftlerinde teknik kuru kayma sürtünmeli bir deney cihazında incelendi. Sistematik sertlik değişimi uygulamada su verme sonu temperleme sıcaklığının değişimi ile saplandı. Aşınmanın C-miktarına bağımlılığının tayininde deney elemanlarının sertlik değerlerinin sabit tutulmasına dikkat edildi. Aynı sistemde aynı yüzey sertliğinde bile olsa, karbon oranına bağlı olarak aşınma direncinin arttığı ve bu artma miktarının yüksek sertlik değerlerinde daha da büyüdüğü görülmektedir.Item Santrifüj kavramalarla enerji tasarrufu(Uludağ Üniversitesi, 1989) Babalık, Fatih C.; Kıraç, Nejat; Mühendislik Fakültesi; Makina Mühendisliği BölümüIn this study, properties of the centrifugal clutches are shortly deseribed and their importance on energy savings are investigated. With the aid of AMSTRAD CPC 6128 computer and an interface, phase current and voltage measured and power consumption wtıS calculated. As a resull, it was found that some amount of energy can be saved with the centrifugol clutches.