Poisson-distributed failures in the predicting of the cost of corrective maintenance

Andrzejczak, Karol; Młyńczak, Marek; Selech, Jarosław

doi:10.17531/ein.2018.4.11

Cited by 30 publications

(24 citation statements)

References 18 publications

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“…Lithuania has a well-developed meat processing industry, which produces (especially when it comes to chicken) large amounts of fat, a cheap and high-energy raw material [20]. Its further use can be related to the chemical industry [21], but it can also be used as fuel in compression ignition engines [22], especially considering the fact that industrial waste has already been used for similar purposes before (e.g., waste fat from the leather industry was used in fuel production). The received test results showed the applicability of ester blends of this raw material with diesel (10% and 30% ester in diesel), as the cetane number of the blends for the in-cylinder pressure and heat release curves were very similar to those of diesel.…”

Section: Introductionmentioning

confidence: 99%

Study of Indicators of CI Engine Running on Conventional Diesel and Chicken Fat Mixtures Changing EGR

et al. 2021

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This article presents a change in the indicators of a compression ignition (CI) engine by replacing conventional diesel fuel (D100) with pure chicken fat (F100) and mixtures of these fuels. Mixtures of diesel and fat with volume ratios of 70/30, 50/50 and 30/70 were used. Research of the fuel properties was conducted. In order to reduce the fuel viscosity, blends of fat and diesel were heated. The experimental research was conducted at different engine loads with exhaust gas recirculation (EGR) both off and on. The conducted analysis of the combustion process revealed a significant change in the rate of heat release (ROHR) when replacing diesel with chicken fat. Chicken fat was found to increase the CO2 and CO emissions, leaving hydrocarbon (HC) emissions nearly unchanged. Having replaced the D100 with diesel and chicken fat mixtures or F100, a significant reduction in smoke and nitrogen oxide (NOx) emissions was observed when EGR was off. When EGR was on, the smoke level increased, but the blends with chicken fat reduced it significantly, and the increased fat content in the fuel mixture reduced the NOx emissions. The engine’s brake specific fuel consumption (BSFC) increased while the brake thermal efficiency (BTE) decreased, having replaced conventional diesel with chicken fat due to differences in the fuel energy properties and the combustion process.

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Section: Introductionmentioning

confidence: 99%

Study of Indicators of CI Engine Running on Conventional Diesel and Chicken Fat Mixtures Changing EGR

et al. 2021

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“…Fenomena nyata pada kehidupan sehari-hari seringkali terdapat peristiwaperistiwa yang mengandung usur ketidakpastian, misalkan terjadinya gempa, banjir, fluktuasi suku bunga atau bahkan kematian. Dari peristiwa yang tidak pasti tersebut maka muncullah kejadian acak (random event), sehingga diperlukan ilmu untuk memprediksi kejadian yang terjadi secara acak (random event that (Beichelt, 2006), fibrous materials (Sampson, 2009), failure model (Cha, 2013), alat deteksi nuklir (Pahlajani et al, 2014), maintenance modelling (Andrzejczak et al, 2018), reliability model in engineering for automotive productions line (Soltanali et al, 2019) dan lain-lain.…”

Section: Pendahuluanunclassified

Generalisasi Algoritma Thinning Process pada Proses Poisson Majemuk dengan Komponen Proses Poisson Nonhomogen dan Distribusi Gamma

Abdullah

Susilo

Huda

et al. 2020

MUST

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“…The issue of reliability of biomedical materials is widely discussed in scientific works. Reliability can be understood as the ability to perform intended functions in relation to time in certain conditions of use [14][15][16][17][18][19]. In this approach, reliability is associated with durability which is also the subject of biomedical materials testing [6,7,[20][21][22][23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Bending Behaviour of Polymeric Materials Used on Biomechanics Orthodontic Appliances

et al. 2020

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This paper discusses the issues of strength and creep of polymeric materials used in orthodontic appliances. Orthodontic biomechanics is focused on the movement of individual teeth or dental groups as a result of the force applied by orthodontic appliances. Stresses in the construction of functional and biomechanical appliances is generated when using the apparatus in the oral cavity. The orthodontic appliance must maintain its shape and not be damaged during treatment so strength and creep resistance are fundamental properties. It was assumed that the clinical success of orthodontic appliances can be determined by these performance properties. The aim of the work was the experimental assessment of comparative bending strength and creep resistance of selected popular polymer materials used in the production of biomechanical orthodontic appliances. Four commercial materials manufactured by the world class producers were tested: NextDent Ortho Rigid (Vertex-Dental B.V., Soesterberg, The Netherlands) marked as “1A”; Erkocryl (ERKODENT Erich Kopp GmbH, Pfalzgrafenweiler, Germany)-“2A”; Vertex Orthoplast (Vertex Dental B.V.), blue, marked as “3A” and material with the same name as “3A” but orange, marked in the article as “4A”. All the tests were carried out after aging in artificial saliva for 48 h at a temperature of 37 °C. Flexular strength and flexular modulus were made using the three point bending method according to the ISO 178 technical standard. Creep tests were carried out according to the method contained in ISO 899-2. The creep test was carried out in an artificial saliva bath at 37 °C. The creep tests showed significant differences in the strength, modulus and deformability of the tested materials. The strength reliability of the tested materials also varied. The research shows that the 2A material can be used for orthodontic applications in which long-term stresses should be lower than 20 MPa.

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Poisson-distributed failures in the predicting of the cost of corrective maintenance

Abstract: Article citation info: (*) Tekst artykułu w polskiej wersji językowej dostępny w elektronicznym wydaniu kwartalnika na stronie www.ein.org.pl

Cited by 30 publications

References 18 publications

Study of Indicators of CI Engine Running on Conventional Diesel and Chicken Fat Mixtures Changing EGR

Study of Indicators of CI Engine Running on Conventional Diesel and Chicken Fat Mixtures Changing EGR

Generalisasi Algoritma Thinning Process pada Proses Poisson Majemuk dengan Komponen Proses Poisson Nonhomogen dan Distribusi Gamma

Bending Behaviour of Polymeric Materials Used on Biomechanics Orthodontic Appliances

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