THE RATIO OF THE WARRANTY PERIOD TO THE PERIOD FOR SUBMITTING A QUALITY CLAIM

2020 ◽  
pp. 139-142
Author(s):  
R. S. Zardov
Keyword(s):  
Warranty Period ◽  
Warranty Service

The article presents the study of certain issues that arise in the process of establishing and implementing conditions for warranty service of goods

Two-stage flexible warranty decision-making considering downtime loss

2019 ◽  
Vol 234 (3) ◽  
pp. 527-535
Author(s):  
Rui Zheng ◽  
Chun Su ◽  
Yuqiao Zheng
Keyword(s):  
Decision Making ◽  
Preventive Maintenance ◽  
Maintenance Cost ◽  
Service Cost ◽  
Decision Framework ◽  
Two Stage ◽  
Warranty Period ◽  
Second Stage ◽  
Warranty Service ◽  
Warranty Policies

Most existing warranty policies are rigid, and the downtime loss is also not taken into account. This study develops a two-stage decision framework to design flexible warranty policies, where the downtime loss is considered. In the first stage, by minimizing the warranty service cost, a fixed warranty policy is provided to determine the baseline of preventive maintenance’s times and effort. In the second stage, customers have three options to increase preventive maintenance times, preventive maintenance effort, or both of them, which results in three types of flexible warranty policies. The additional maintenance cost for the increased preventive maintenance times and/or preventive maintenance effort is paid by the customers. Besides, the flexible policies are optimized to minimize customer’s cost, which is the sum of the downtime loss and shared maintenance cost. A practical example is provided to illustrate the effectiveness of the proposed flexible warranty policies. The results indicate that compared with the fixed warranty policies, both the manufacturer and customers can benefit from the proposed flexible policies, especially when the downtime loss is substantial. Moreover, the proposed policy is more effective when the warranty period is longer.

ANALYSIS OF THE MANAGEMENT OF THE TECHNICAL CONDITION OF AGRICULTURAL MACHINERY PRODUCTS BY THE EXAMPLE OF PRODUCTS OF A PUBLIC JOINT-STOCK COMPANY “PROMTRACTOR”

2020 ◽  
pp. 32-39
Author(s):  
I. E. Parfenyeva ◽  
O. F. Vyacheslavova ◽  
V. V. Matrosova
Keyword(s):  
Technical Condition ◽  
Joint Stock Company ◽  
Basic Information ◽  
Agricultural Machinery ◽  
Stock Company ◽  
Warranty Period ◽  
Warranty Service

The article analyzes the data on the management of the technical condition of agricultural machinery objects, presents basic information on warranty service of products of public joint stock company “Promtractor”, provides diagrams showing the procedure for work from the date of delivery of products to the buyer until the end of the warranty period for products.

scholarly journals Product reliability and warranty period as a cost-forming factors

2016 ◽  
Vol 17 (4) ◽  
pp. 361-369
Author(s):  
Nataly Podolyakina
Keyword(s):  
High Tech ◽  
Time Interval ◽  
Competitive Advantages ◽  
Product Reliability ◽  
Complete Replacement ◽  
Warranty Period ◽  
Manufactured Products ◽  
Warranty Service ◽  
The Impact

The relevance of this study is determined by the fact that, in modern conditions, the manufacturers of high-tech products offer long-term warranty service for their products aiming at receiving the consumer. In turn, the frequency of warranty service depends on the probability of trouble-free operation of the product in a certain time interval. However, increasing the uptime of the products and increase the warranty period results in increased costs. Therefore, the purpose of this study is to develop a model that allows determining the impact of the following factors on the product cost: the reliability of the manufactured products and the term of their warranty. To achieve the goal of the research there has been determined the content of warranty service, has been introduced the integrated indicator of quality warranty services, and has been shown the level of products reliability as a dependence from the costs of their manufacturing and warranty service. The novelty of this study is estimation of the manufacturer’s cost depending on the way of providing the warranty service, either by repair, or by complete replacement of the failed product. The research results provide competitive advantages to manufacturers of high-tech products since it enables to find the efficient period and intensity of the warranty service.

Estimating the Cost of Car Warranty in Indonesia using the Gertsbakh-Kordonsky Method

2020 ◽  
Vol 2 (1) ◽  
pp. 33-40
Author(s):  
Anggis Sagitarisman ◽  
Aceng Komarudin Mutaqin
Keyword(s):  
Maximum Likelihood ◽  
Likelihood Estimation ◽  
Type A ◽  
Claim Data ◽  
Likelihood Method ◽  
Selling Price ◽  
One Dimensional ◽  
Warranty Period ◽  
Kolmogorov Smirnov ◽  
Warranty Costs

AbstractCar manufacturers in Indonesia need to determine reasonable warranty costs that do not burden companies or consumers. Several statistical approaches have been developed to analyze warranty costs. One of them is the Gertsbakh-Kordonsky method which reduces the two-dimensional warranty problem to one dimensional. In this research, we apply the Gertsbakh-Kordonsky method to estimate the warranty cost for car type A in XYZ company. The one-dimensional data will be tested using the Kolmogorov-Smirnov to determine its distribution and the parameter of distribution will be estimated using the maximum likelihood method. There are three approaches to estimate the parameter of the distribution. The difference between these three approaches is in the calculation of mileage for units that do not claim within the warranty period. In the application, we use claim data for the car type A. The data exploration indicates the failure of car type A is mostly due to the age of the vehicle. The Kolmogorov-Smirnov shows that the most appropriate distribution for the claim data is the three-parameter Weibull. Meanwhile, the estimated using the Gertsbakh-Kordonsky method shows that the warranty costs for car type A are around 3.54% from the selling price of this car unit without warranty i.e. around Rp. 4,248,000 per unit.Keywords: warranty costs; the Gertsbakh-Kordonsky method; maximum likelihood estimation; Kolmogorov-Smirnov test.                                   AbstrakPerusahaan produsen mobil di Indonesia perlu menentukan biaya garansi yang bersifat wajar tidak memberatkan perusahaan maupun konsumen. Beberapa pendekatan statistik telah dikembangkan untuk menganalisis biaya garansi. Salah satunya adalah metode Gertsbakh-Kordonsky yang mereduksi masalah garansi dua dimensi menjadi satu dimensi. Pada penelitian ini, metode Gertsbakh-Kordonsky akan digunakan untuk mengestimasi biaya garansi untuk mobil tipe A pada perusahaan XYZ. Data satu dimensi hasil reduksi diuji kecocokan distribusinya menggunakan uji kecocokan Kolmogorov-Smirnov dan taksiran parameter distribusinya menggunakan metode penaksir kemungkinan maksimum. Ada tiga pendekatan yang digunakan untuk menaksir parameter distribusi. Perbedaan dari ketiga pendekatan tersebut terletak pada perhitungan jarak tempuh untuk unit yang tidak melakukan klaim dalam periode garansi. Sebagai bahan aplikasi, kami menggunakan data klaim unit mobil tipe A. Hasil eksplorasi data menunjukkan bahwa kegagalan mobil tipe A lebih banyak disebabkan karena faktor usia kendaraan. Hasil uji kecocokan distribusi untuk data hasil reduksi menunjukkan bahwa distribusi yang cocok adalah distribusi Weibull 3-parameter. Sementara itu, hasil perhitungan taksiran biaya garansi menunjukan bahwa taksiran biaya garansi untuk unit mobil tipe A sekitar 3,54% dari harga jual unit mobil tipe A tanpa garansi, atau sekitar Rp. 4.248.000,- per unit.Kata Kunci: biaya garansi; metode Gertsbakh-Kordonsky; penaksiran kemungkinan maksimum; uji Kolmogorov-Smirnov.

The Right to Repair Goods in the Era of Digitalization and Globalization

2021 ◽  
Vol 16 (12) ◽  
pp. 45-52
Author(s):  
P. L. Likhter
Keyword(s):  
Circular Economy ◽  
Medical Equipment ◽  
Environmental Safety ◽  
Spare Parts ◽  
Service Organizations ◽  
Warranty Period ◽  
Market Participants ◽  
The Right ◽  
High Degree

Today, large companies are increasingly using controversial strategies related to the violation of the buyer’s rights to repair the goods both during and after the expiration of the warranty period. This is primarily manifested in the restriction of access to the necessary information on the product repairing, hindering the work of independent service organizations, intentional complication of parts during their design, unreasonably high degree of integration of units, lack of a sufficient number of spare parts on the market, etc. As a rule, such actions distort the principles of integrity and transparency, which, in turn, entails risks to consumer and environmental safety. This issue is of particular relevance in the context of the COVID-19 pandemic, when sellers of medical equipment restrict the possibility of its restoration by independent specialists, and also prevent the distribution of the necessary software. Based on the results of the work, it is concluded that it is advisable to establish boundaries for the conduct of market participants to stimulate the production of durable and maintainable goods in order to transit to a circular economy.

scholarly journals The study of the properties of sweet cream butter with flavoring components

2018 ◽  
Vol 80 (3) ◽  
pp. 220-223
Author(s):  
O. I. Dolmatova ◽  
A. S. Sharshov
Keyword(s):  
Shelf Life ◽  
Mass Fraction ◽  
Maple Syrup ◽  
Warranty Period ◽  
Fatty Oil ◽  
Organoleptic Characteristics ◽  
Good Consistency ◽  
Microbiological Parameters ◽  
The Stability ◽  
Time Reserve

The technology of sweet-sour dessert oil with maple syrup has been developed. It is of scientific interest to study its quality indices when stored. The organoleptic characteristics of the butter of the sweetener with flavor components were determined in the scores. The score of the ball was 20 points. The chemical parameters of sweet dessert oil with maple syrup are found: mass fraction of fat, not less than – 62%, mass fraction of dry substances, not less – 9,5%, mass fraction of moisture, not more than – 28,5%. The conformity of oil indicators with the norms specified in TP TS 033/2013 for cream butter with the components is established: mass fraction of fat – 50 to 69%, mass fraction of moisture – 16 to 45%. The thermostability of butter of sweet-dessert dessert oil with maple syrup has been determined – 0,7, i.e. the indicator is characterized as satisfactory. A good consistency of sweet dessert oil with maple syrup is found on the slice – the plate has a dense, even surface and edges, with slight pressure bending. The shelf life of sweet dessert oil with maple syrup is 15 days. Acidity of the fat phase was determined over a period of 21 days (taking into account the time reserve). The index of acidity of the analyzed sample for 15 days was – 2.7 °C, which corresponds to the norm. Estimation of the acidity of the fatty phase and the acidity of the plasma of the oil showed an insignificant increase during the warranty period of shelf life. The stability of fatty oil of sweet-dessert dessert with maple syrup has been determined. During the experiment, the color became yellow, the smell is sweet, creamy, pleasant, the aroma of maple syrup is pronounced. The specimen withstood the test for 8 hours, no damage to the fat is noted. The microbiological parameters of the oil have been determined. The conformity of oil with the requirements of State standard 32899–2014 and TP TS 033/2013 during storage is established.

scholarly journals Research on Pricing of Flexible Two-Dimensional Extended Warranty Considering Preventive Maintenance

2019 ◽  
Vol 37 (2) ◽  
pp. 393-400
Author(s):  
Xiaolei Zhang ◽  
Chun Su
Keyword(s):  
Preventive Maintenance ◽  
Two Dimensional ◽  
Maintenance Strategy ◽  
Pricing Model ◽  
Reduction Model ◽  
Warranty Period ◽  
Extended Warranty ◽  
Warranty Cost ◽  
Usage Rates

Facing the uncertainty in transaction of two-dimensional extended warranty, a flexible pricing model is presented considering imperfect preventive maintenance combined with the degradation characteristics of item. The measure of two-dimensional preventive maintenance is carried out based on specified age interval or usage interval, the effect of imperfect preventive maintenance is described by age reduction model. The extended warranty cost is modeled from the perspective of manufacturer and customer, the method of gridding search is employed to optimize the maintenance strategy under different cases. Moreover, customized extended warranty price and warranty services are proposed on the basis of consumer usage rates. The results demonstrate that it is helpful to maximize the benefit of vendor by providing customized warranty strategy, the implementation of preventive maintenance during the whole warranty period can effectively reduce warranty cost for both sides.

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