European Journal of Forest Engineering最新文献_第9页

Assessing Material Consumption Due to Spare Part Utilization by Harvesters and Forwarders 评估收割机和货代因备件使用而产生的材料消耗

European Journal of Forest Engineering Pub Date : 2000-06-01 DOI: 10.1080/08435243.2000.10702754

D. Athanassiadis, G. Lidestav, I. Wästerlund

{"title":"Assessing Material Consumption Due to Spare Part Utilization by Harvesters and Forwarders","authors":"D. Athanassiadis, G. Lidestav, I. Wästerlund","doi":"10.1080/08435243.2000.10702754","DOIUrl":"https://doi.org/10.1080/08435243.2000.10702754","url":null,"abstract":"Abstract The aim of this study was to i) develop and examine a methodology to handle spare part utilization data for work machinery for future inclusion into a life cycle assessment study and ii) assess the material consumption per 1000 m3ub harvested and transported to the roadside due to spare part utilization by three types of forest machinery. Thirteen forwarders, 14 single-grip harvesters and 10 two-grip harvesters operating in northern Sweden were followed up by repair records that covered a period from half a year up to 3.5 years. The replaced machine components were sorted in seven material categories - steel and iron, aluminum, other metals (brass, copper), plastics, rubber, glass and batteries. Two scenarios with different assumptions on the consumption of saw chains, guide bars and tires were developed. According to the low scenario about 46 kg of material will be consumed for harvesting and transporting 1000 m3ub to the roadside. The corresponding figure for the high scenario is 58 kg. The total component mass expected to be replaced during the operational lifetime (18000 E15 hours) of the machines was also calculated. According to the low scenario 38- 45% of the mass of a machine will be changed during its operational lifetime. The corresponding figure for the high scenario is 50-56%.","PeriodicalId":36173,"journal":{"name":"European Journal of Forest Engineering","volume":"26 1","pages":"51 - 57"},"PeriodicalIF":0.0,"publicationDate":"2000-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78277031","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Application of Dynamic Programming to Optimum Location of a Forest Road 动态规划在森林道路优化选址中的应用

European Journal of Forest Engineering Pub Date : 2000-06-01 DOI: 10.1080/08435243.2000.10702752

J. Tan

引用次数: 4

Forest Machinery Crane Compound Scheme Synthesis: Optimization of Hydraulic Cylinder Operating Mechanisms 林机起重机复合方案综合:液压缸操作机构优化

European Journal of Forest Engineering Pub Date : 2000-01-01 DOI: 10.1080/08435243.2000.10702746

Y. Gerasimov, V.S. Siounev

引用次数: 8

Modeling Production of Longline Yarding Operations in Coastal British Columbia 不列颠哥伦比亚省沿海延绳钓船厂作业的建模生产

European Journal of Forest Engineering Pub Date : 2000-01-01 DOI: 10.1080/08435243.2000.10702742

J. Mcneel

{"title":"Modeling Production of Longline Yarding Operations in Coastal British Columbia","authors":"J. Mcneel","doi":"10.1080/08435243.2000.10702742","DOIUrl":"https://doi.org/10.1080/08435243.2000.10702742","url":null,"abstract":"Abstract Two Madil 046 skyline yarders, rigged as slackline systems and equipped with Ballenger motorized carriages, were studied by field crews from the University of British Columbia - Forest Operations Group for approximately six months at sites on the west coast of Vancouver Island in British Columbia. A continuous turn element time study, using handheld data recorders was employed to collect data throughout the study. Mean cycle times for the two operations ranged from 11.5 to 13.5 minutes per cycle. Delays contributed at least 20 percent of the cycle time for both operations and were primarily caused by carriage related problems. Average piece size differed by more than 56 percent and created significant differences in overall system productivity. While average cycle time for the two systems differed by at least two minutes, the system with the longer cycle time had higher mean production due to the larger volume per piece and per cycle. The study results strongly suggest that maximizing volume per cycle is critical to maintaining productivity and minimizing costs, even though cycle time may be increased. In this case, one system was able to capitalize on larger average piece size to significantly improve hourly production, even though cycle times for this yarder were higher. More effort is needed during operations to monitor volume (or weight) per cycle and consistently maintain the maximum volume per cycle for existing conditions.","PeriodicalId":36173,"journal":{"name":"European Journal of Forest Engineering","volume":"1 1","pages":"29 - 38"},"PeriodicalIF":0.0,"publicationDate":"2000-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83537474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Modelling Forest Operations and Sector Development in Norway’s Fjord Region 模拟挪威峡湾地区的森林经营和部门发展

European Journal of Forest Engineering Pub Date : 2000-01-01 DOI: 10.1080/08435243.2000.10702743

D. Fjeld, L. Hem, T. Eikebrokk

引用次数: 4

Physical and Mechanical Properties of Wood Polymer Composites 木质高分子复合材料的物理力学性能

European Journal of Forest Engineering Pub Date : 2000-01-01 DOI: 10.1080/08435243.2000.10702748

M. Schneider, J. G. Phillips, S. Lande

引用次数: 11

Where to Place and Build Forest Roads -- Experience From the Model 在哪里设置和修建林道——从模型中获得的经验

European Journal of Forest Engineering Pub Date : 2000-01-01 DOI: 10.1080/08435243.2000.10702740

B. Košir, J. Krč

{"title":"Where to Place and Build Forest Roads -- Experience From the Model","authors":"B. Košir, J. Krč","doi":"10.1080/08435243.2000.10702740","DOIUrl":"https://doi.org/10.1080/08435243.2000.10702740","url":null,"abstract":"Abstract The paper presents the conditions in which forest production as well as forest road design and construction in Slovenia are going on. The most important influential factors and the limitations in the production process have been given special emphasis, among which there are also potential environmental disturbances and forest functions. A brief description of a method based on multicriteria decision making, a model form of which was applied in the analysis of technologies and forest road network in the Jezersko forest region, is presented as well. The results indicate the suitability of terrain for the design and construction of forest roads and skidding tracks. An analysis of the present forest road and skidding track network as well as a comparison of terrain suitability with the suitability of all terrain have been made as well. It has been established that especially in the construction of forest roads and skidding tracks difficulties regarding construction have strongly been taken into consideration, because the existing network is situated on terrain which is easier than the average. Finally, the possibilities as to the further developments of the model have been indicated.","PeriodicalId":36173,"journal":{"name":"European Journal of Forest Engineering","volume":"26 1","pages":"19 - 7"},"PeriodicalIF":0.0,"publicationDate":"2000-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75264151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

An Ergonomic Assessment of Manual Planting Pinus Radiata Seedlings 人工种植辐射松幼苗的工效学评价

European Journal of Forest Engineering Pub Date : 2000-01-01 DOI: 10.1080/08435243.2000.10702744

M. Sullman, J. Byers

引用次数: 20

A Comparison of Sampling Methods for Measuring Residual Stand Damage from Commercial Thinning 商业间伐对林分残害取样方法的比较

European Journal of Forest Engineering Pub Date : 2000-01-01 DOI: 10.1080/08435243.2000.10702745

H.-S. Han, L. Kellogg

引用次数: 14

Effects of Establishment and Thinning of Shelterwoods on Harvester Performance 防护林的建立和间伐对收获性能的影响

European Journal of Forest Engineering Pub Date : 2000-01-01 DOI: 10.1080/08435243.2000.10702741

L. Eliasson

引用次数: 16