7 results
Search Results
Now showing 1 - 7 of 7
Review Analysis of Different Methods of Suppressing Generator Noise Reaching Indoor Noise(2022) Öz, Hatice Mehtap; Koçyiğit, Filiz Bal; Köse, ErcanThe noise which occurs during the operation of the auxiliary power units is a disturbing factor, although its level varies depending on the environment. This high level of noise in occupational areas can cause not only health but also accidents risks. While silencers are mostly preferred for active noise control, acoustic foam or textile products are preferred according to passive control methods. In this review, the noises produced by the generators were examined and the studies in the literature on suppressing these noises were evaluated by making comparative analyzes. New recommendations have been developed according to the results of the comparative analysis. In case the sampled natural gas generator is closed with 2 mm thick plywood and a steel framed box covered with an acoustic sponge, the sound pressure level is approximately 30 dB in low frequency diesel + electric generators using a silencer according to active control methods. In measurements; It was observed that it decreased from 93.2 to 88.4 dB. While materials such as an acoustic sponge, which are preferred in passive control methods, are open-celled and porous structures, it is advantageous to have sound absorption capacity, but it can be a disadvantage due to its synthetic content.Article A Modeling Approach for Designing New Acoustic Materials(Gazi Univ, 2024) Koçyiğit, Filiz Bal; Köse, Ercan; Buluklu, Hatice MehtapIn this study, mathematical modeling design based on Sound Transmission Loss measurement results of new acoustic material samples with natural content was carried out. Using the test samples in question, transfer function of acoustic materials based on electronic filter circuit design and a transition design method for the production of new acoustic materials by utilizing the transfer function is presented. Based on the experimental results of the test samples, it is the most suitable low-pass filter structure for the proposed design. In this study, active Sallen-Key low-pass filter structure is preferred and used. Sound Transmission Losses in dB (decibels) of acoustic samples were obtained experimentally for 500, 1000, 2000 and 4000 Hz. fundamental frequencies in the literature. Based on these data, transfer function simulation suppression gain results were obtained in TINA-TI program, active filter circuit designed, and MATLAB program. When the other results were compared in the experimental results, it was seen that very close values were obtained. It has been demonstrated that the proposed method can be used effectively in the design and examination of new acoustic materials.Article Assessment of the Acoustic Performance of Historical Structures That Shedlight on Today's Technologies: Fatih Pasha (kurşunlu) Mosque - Diyarbakır(2021) Aydın, Derya Çakır; Koçyiğit, Filiz Bal; Dalkılıç, NeslihanToday's technologies are produced using new construction methods and new materials and using differenttechniques. While the time dimension of the parametric design, which is defined as the fourth dimension,is sometimes an hour, day or year, sometimes this is seen as a bridge between the past and the present ofthe structures that have survived in a large date range. For this reason, the support of new buildingmaterials and techniques from time to time with methods that have the technical data of the periodobtained as a result of our historical heritage and long experience can provide us with new perspectives.The architectural features and construction techniques of historical mosques contain important data on theacoustic performance of religious buildings. Our heritage knowledge must be blended with newknowledge and technologies. Within the scope of the study, the details and systems that were effective inproviding acoustic performance parameters in the architecture of Fatih Pasha (Kurşunlu) Mosque, whichwas the first Ottoman period work of the city located in Diyarbakır Suriçi area, were examined. Among theobjective parameters of the sound, Reverberation Time (RT), Early Decay Time (EDT), Clarity (C80), andDefinition (D50) metrics were measured. The obtained data were compared with reference values andanalyzed. As a result of the data and analysis obtained in the literature reviews, it was determined that theacoustic values of the mosque were in harmony with the reference values. When the measurement datawere compared with the obtained international publications, it has been observed that the sound pressurevalue ranges depending on the frequency of acceptable indoor acoustics standards. The importance ofrestoration works in harmony with materials such as basalt, brick, limestone, lime mortar and plasterwhich are the original materials of the building was highlighted in terms of acoustics.Article II. BEYAZIT TIP FAKÜLTESİNDE AKUSTİĞİN MİMARİ TASARIMA ETKİSİ(2021) Koçyiğit, Filiz BalAnadolu Türkleri çağlar boyunca sanat ve bilimle yakından ilgilenmişlerdir. Osmanlı ve Selçuklu Türkleri ile Türkiye Cumhuriyeti'nin kurulduğu yıllarda bilim ve sanat alanında büyük gelişmeler gösterildi. Müzik, Türk insanı için hayatın en önemli parçalarından biridir. Atatürk, “Hayatta müzik gerekmez. Çünkü hayat müziktir ”dedi. Gülbahar ve oğlu Fatih Sultan Mehmet II. Beyazıt, küçükken ünlü bilim ve sanat uzmanlarından eğitim aldı. Mimar Hayrettin ise dönemin önemli mimarlarından biriydi ve 1500'lerde meydana gelen depremden sonra İstanbul ve Edirne'nin yeniden inşası için çalıştı. Sultan II. Beyazıt M.S. 1484 yılında Buğdan seferine çıkarken II. Edirne'de Beyazıt Külliyesi'nin kuruluşunun temelini attı. Külliyenin yanı sıra tıp fakültesi (tıp fakültesi), darüşşifa, çorba mutfakları, Tunca Nehri üzerinde köprü, çifte hamam, un değirmeni, soyağacı okulu, mehterhane, tabhane (fakirler için otel) ve bir muvakkithane (astronomi sınıfı) inşa edildi. . Çalışmamızda tıp tarihinin önemli bir merkezi olan hastane ve tıp medresesi akustik olarak ele alınmış ve incelenmiştir. Medresede temel bilgilere sahip olan öğrenciler, hastanenin usta doktorlarından tıp eğitimi alırlar. Böylelikle usta-çırak ilişkisi kurulur. Medrese ile darüşşifa binasının tek ara kapıyla birbirinden ayrılmasının ana nedeni budur. Böylelikle öğrenciler arası iletişim kolaylıkla sağlandı. İç mekân akustiği hakkında bilgi sahibi olduğu düşünülen II. Beyazıt, döneminde müziğe büyük önem vermiş ve bu yönde Mimar Hayrettin'i etkilediği düşünülmektedir. II. Beyazıt kompleksinde kullanılan kubbeler, altıgen formun etrafına yerleştirilen hasta odaları, merkezdeki su ünitesi ve su sesinin odalara yansıyan müziğin yarattığı ses dağıtım kalitesi, mimar Hayrettin'in bir akustik üzerine araştırma. Komplekste kullanılan müzik terapisi, modern tıbbın yanı sıra geleneksel tıp için de uygundur.Article Citation - WoS: 2Citation - Scopus: 3Low-Cost Alpha Cabin Like Test Box Proposal for the Development of New Acoustic Sound Insulation Materials(Gazi Univ, 2023) Koçyiğit, Filiz Bal; Köse, Ercan; Buluklu, Hatice MehtapExperimental criteria for sound insulation material recommendation and design have an important share in indoor acoustic control. Among these criteria, laboratories with devices such as impedance tubes, alpha cabins and reverberation rooms used to measure and analyze parameters such as sound transmission loss and sound absorption coefficient have been investigated. In literature, it has been observed that there are studies on acoustic materials and the tests applied to these materials, but the application is more limited. According to research data, an Alpha Cabin model system design that can be used to develop new types of acoustic sound materials has been proposed. In addition to the fact that a large number of experimental measurements can be performed at lower costs using the designed Alpha Cabin model system, many tests can be performed easily for different material designs in a very short time. To perform these tests, the Alpha Cabin system has been designed based on noise and sound insulation. For example, floating flooring, ribbed connection, and so on. Afterward, different insulation materials were used for insulation purposes and standards were achieved. The Alpha Cabin test system, which was designed and developed, overlaps the experimental and theoretical data for 500, 2000, and 4000 Hz when compared with the values of 29.1 dB for 500 Hz, 38.6 dB for 2000 Hz, and 49 dB for 4000 Hz measured in the Acoustic Facade Panel Test Room, and it has been observed that it can be used in the development of new sound insulation materials.Article Sağlık Tesislerinde Gürültü Etmenleri: Türkiye Deki Hastanelerden Örneklemeler(2012) Koçyiğit, Filiz Bal-Article Effective Use of Solar Energy With Bim Supported Parametric Methods: Case Study Al-Shaab Stadium(2021) Koçyiğit, Filiz Bal; Allawı, AbdullahIn this study, it is aimed to create an infrastructure that can contribute to the integration of parametric techniques and the joint work of construction and architectural science through an exemplary building design. The ability to respond to changes in data entry in algorithms gives architectural designers the opportunity to optimize structures and form at the same time. At the same time, replacing inputs with parametric techniques saves time in the design process. Otherwise, the design will have to be redesigned from the beginning, depending on the periodic change made in the design. In addition to this, it has been emphasized to build a building design and structure that will provide energy efficiency. In order to create low cost in profit-cost ratios, the possibility of minimizing the inefficient surfaces with the design method by analysing the floats with maximum energy gain due to creating solar plans. The algorithmic design used for this is modelled on the visual and optimizes the geometry to achieve maximum energy efficiency for the building form. To find solar panels suitable for the building geometry design, there is a need to model the actual effect of the sun's rays on the building. One of the key parameters that helped us reach the results of the study is to explore the possibility of using modern guidelines of exemplified stadium designs. This research is based on a method of comparing analysis between two prototype proposals tested to show the effect of the sun on geometry using parametric algorithms. In this case, \"Grasshopper 3D\" software was used for radiation, daylight hours and shadows to create parametric algorithms in the solar effect simulations process. The purpose of using parametric simulation was to increase energy efficiency for the stadium. Additionally, generative design was used for structural optimization. In this study, generative design was also used to optimize the stadium design structure, which helps to significantly reduce the amount of materials used in the formation of the structure and its costs. In this study, with the help of the Buiding Information Modelling (BIM) program used, solar energy gains affecting the building were investigated and energy gain-loss calculations were made by using environmental data. The obtained data and shell design samples were compared. In the study, Al Shaab stadium in Baghdad was evaluated as an experimental model for modelling the reality.
