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Cab air quality: A CRITICAL COMPONENT OF OPERATOR COMFORT

SAE Truck & Off-Highway Engineering: October 2019

Jeff Moredock
  • Magazine Article
  • 19TOFHP10_04
Published 2019-10-01 by SAE International in United States

Focus on defining cab air quality, measuring it, and designing the needed performance into cabin designs and HVAC systems is intensifying.

Review the design specs for any new haul truck, excavator, dozer or other off-road machine, and you're not likely to find requirements related to cab air quality-yet. However, standards are changing and the need to optimize cab enclosure environments for air quality will grow.

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Personnel Protection - Skid Steer Loaders

OPTC1, Personnel Protection (General)
  • Ground Vehicle Standard
  • J1388_201907
  • Current
Published 2019-07-03 by SAE International in United States
This SAE Standard is intended to provide personnel protection guidelines for skid steer loaders. This document is intended as a guide towards standard practice, but may be subject to frequent change to keep pace with experience and technical advances. This should be kept in mind when considering its use. This document provides performance criteria for newly manufactured loaders and it is not intended for in-service machines.
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Stronger, quieter cabs

SAE Truck & Off-Highway Engineering: June 2019

based on exclusive interview with Worthington's Matt Trippel-Ryan Gehm
  • Magazine Article
  • 19TOFHP06_04
Published 2019-06-01 by SAE International in United States

Worthington expert sees AHSS and active noise cancellation making off-highway cabs safer and less-stressful places to work.

Worthington Industries made its first-ever appearance at bauma in April, showcasing the new Global Cab modular design along with its European manufacturing partner Fritzmeier. The cab's length and width can be varied by using different modular parts and the ROPS (rollover protection structure) incorporated to meet varying requirements while optimizing the cab structure to increase visibility.

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Product Identification Numbering System of Off-Road Work Machines

MTC1, Loaders, Crawlers, Scrapers and Mounted Attachments
  • Ground Vehicle Standard
  • J1360_201905
  • Current
Published 2019-05-10 by SAE International in United States
This standard covers self-propelled off-road work machines as categorized in SAE J1116 and Agricultural Tractors as defined in ANSI/ASAE S390.
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Personnel Protection for General Purpose Industrial Machines

OPTC1, Personnel Protection (General)
  • Ground Vehicle Standard
  • J98_201904
  • Current
Published 2019-04-11 by SAE International in United States
No Abstract Available.
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A Simplified Analytical/Experimental Method for Evaluating Large Buses and Motor Coaches for Rollover Protection

Springwater Micro Data Systems-Lonney S. Pauls
Published 2018-08-27 by SAE International in United States
This paper discusses a simplified analytical/experimental method for evaluating and designing large buses and motor coaches for rollover protection. The proposed method makes use of the work-energy principle in analyzing the energy-absorbing capacity of the roof and sidewall structure of the vehicle. The basic structural unit is treated as a nonlinear, elastoplastic, 4-bar linkage, with the links connected at hinge points. During rollover, the deformation of the structure is focused at these hinge points and energy absorption is achieved through plastic bending and rotation of the hinge material. The proposed method allows the evaluation and design of these plastic hinges to achieve the energy-absorbing requirements for the vehicle. This paper demonstrates the proposed methodology by evaluating an exemplar large bus design against the European ECE-R.66 rollover design standard. This same vehicle was similarly evaluated in a referenced study, using the finite element analysis (FEA) method. The objective of both studies was to determine a minimum weight solution for the vehicle structure. The minimum weight solution must satisfy both the minimum energy absorption requirements and the…
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Structural Optimization of Rollcage Using Finite Element Analysis and Design of Experiments Approach

Tata Technologies-Pritesh Jain
Published 2018-04-15 by SAE International in United States
Finite Element Analysis (FEA) is a numerical method to find solutions to real world problems and is now commonly used for product development. Various finite element analyses are performed to validate the system performance. Many finite element codes are also available for this purpose. Now-a-days, product development not only deals with the validation of design performance, but also focuses on design optimization. Methods such as one-factor-at-a-time (OFAT) experiments are generally used in which one input factor is varied at a time and its effect on system performance is studied. Design of Experiments (DOE) is a systematic approach in which more than one input factors are purposefully varied to study their effect on system performance. Finite Element Analysis and Design of Experiments approach can be used in combination for design optimization. This paper deals with the process for design optimization that can be followed using FEA and DOE in conjunction. This methodology is explained with an example of structural optimization of rollcage having an objective to minimize the mass of rollcage structure. A finite element model…
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2017 Create the Future Design Contest: Medical Category Winner

  • Magazine Article
  • TBMG-27820
Published 2017-11-01 by Tech Briefs Media Group in United States

Kid: A Telemedicine Solution for Retinopathy of Prematurity

  • Magazine Article
  • TBMG-27844
Published 2017-11-01 by Tech Briefs Media Group in United States

Retinopathy of prematurity (ROP) is a disease that affects premature infants. It is the leading cause of childhood blindness. Although effective treatments exist, many infants are still at-risk due to the small window of time for detection. The current standard of care consists of in-person, manual screening by a pediatric ophthalmologist. Unfortunately, the number of infants in need of screening far surpasses the availability of specifically trained ophthalmologists. Consequently, fewer than 30 percent of neonatal intensive care units (NICUs) worldwide have fully compliant ROP screening programs.

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Minimum Performance Criteria for Operator Front Protective Structure (OFPS) for Certain Equipment

MTC4, Forestry and Logging Equipment
  • Ground Vehicle Standard
  • J2267_201710
  • Current
Published 2017-10-26 by SAE International in United States
This SAE standard applies to all forestry machines exposed to the hazard of objects penetrating the front of the operator station (other than the roof). This would include:
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