Maintenance cost prediction and evaluation of new airplane for general aircraft

2018 ◽  
Author(s):  
Pengyu Yang ◽  
Lijing Wang ◽  
Fengqin Sun
Keyword(s):  
Maintenance Cost ◽  
Cost Prediction

Direct maintenance cost prediction of civil aircraft

2014 ◽  
Vol 86 (5) ◽  
pp. 406-414 ◽  
Author(s):  
Huawei Wang ◽  
Jun Gao ◽  
Haiqiao Wu
Keyword(s):  
Maintenance Cost ◽  
Cost Prediction ◽  
Civil Aircraft

Development of Maintenance Cost Prediction Model for Heritage Buildings

2015 ◽  
Vol 74 (2) ◽  
Author(s):  
Sodangi Mahmoud ◽  
Mohd Faris Khamidi ◽  
Arazi Idrus ◽  
Olanrewaju Abdul-Lateef Ashola
Keyword(s):  
Prediction Model ◽  
Case Studies ◽  
Accurate Method ◽  
Maintenance Cost ◽  
Building Performance ◽  
Cost Prediction ◽  
Maintenance Costs ◽  
Financial Plan ◽  
Heritage Buildings ◽  
Heritage Building

The lack of a simple and accurate method of estimating heritage buildings maintenance costs makes it difficult for custodians and owners of heritage building to make realistic maintenance budgets and to develop good financial plan for managing the maintenance works to heritage buildings. The purpose of this paper is to develop a model for predicting the maintenance costs of heritage buildings. To achieve the aforementioned objective, the paper combined a literature review, cost modeling, survey and case studies. The survey and case studies were adopted in order to validate the maintenance cost prediction model. The model validation results show that the maintenance cost prediction model has about 93% accuracy in predicting annual maintenance cost for heritage buildings based on the building age, gross floor area and building performance index. The model could help custodians and owners of heritage building to forecast maintenance costs easily and accurately, make realistic maintenance budgets and to develop good financial plan for managing the maintenance works of the buildings in their care. 

Commercial Trailer Tires: Tire Inflation and Its Effect on Rolling Resistance, Fuel Economy, and Tire Footprint

2015 ◽  
Vol 43 (2) ◽  
pp. 144-162
Author(s):  
Al Cohn
Keyword(s):  
Fuel Economy ◽  
Rolling Resistance ◽  
Maintenance Cost ◽  
Wear Loss ◽  
Truck Tires ◽  
Footprint Analysis ◽  
Subsequent Loss ◽  
Resistance Data

ABSTRACT Maintaining proper tire inflation is the number one issue facing commercial fleets today. Common, slow-leaking tread area punctures along with leaking valve stems and osmosis through the tire casing lead to tire underinflation with a subsequent loss in fuel economy, reduction in retreadability, tread wear loss, irregular wear, and increase in tire-related roadside service calls. Commercial truck tires are the highest maintenance cost for fleets second only to fuel. This article will examine tire footprint analysis, rolling resistance data, and the effect on vehicle fuel economy from tires run at a variety of underinflated, overinflated, and recommended tire pressures. This analysis will also include the tire footprint impact by running tires on both fully loaded and unloaded trailers. The footprint analysis addresses both standard dual tires (295/75R22.5) along with the newer increasingly popular wide-base tire size 445/50R22.5.

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