ASTM F2811-15(R2020) pdf free download

ASTM F2811-15(R2020) pdf free download.Standard Test Methods for Evaluating Design and Performance Characteristics of Elliptical Trainers
5. Sample Preparations
5.1 Assemble and adjust the elliptical trainer on a horizontal surface according to the manufacturer’s instructions. On train- ers that are fully assembled, verify according to the manufac- turer’s instructions that all components are functioning and that they have been adjusted and aligned properly. Unless otherwise stated, the trainer must pass the following tests without adjustment from this initial condition. Apply power to, if required, or use the trainer and verify that the unit functions properly. If the unit is equipped with a guide system, operate it through its full range. 5.2 The individual test methods will describe any variations or modifications that are required to the test sample. 5.3 Upon completion of the tests the equipment shall function as intended by the manufacturer.
6. Test Methods and Procedures
6.1 In addition to the tests specified in Test Methods F2571, elliptical trainers shall be evaluated as follows: 6.2 Exterior Design: 6.2.1 Foot Supports—The purpose of this test is to evaluate the dimensions of the foot supports used on the sample. 6.2.1.1 Apparatus and Set Up—The sample shall be set up as described in 5.1. 6.2.1.2 Calibration—Verify that the measurement device is properly calibrated and has a resolution of 1 mm (0.04 in.). 6.2.1.3 Procedure—Measure the dimensions of the slip resistant area of the pedal. Measure the guard heights of the pedal at the front and inside edges. Check for pinch or shear points along the outer edge of the footplate per Specification F2276 and Test Methods F2571. If pinch or shear points exist, measure the guard height of the pedal at the outside edge. 6.2.1.4 Pass/Fail Criteria—The dimensions of the slip re- sistant surface of each pedal shall conform to dimensional requirements of subsection 5.1 of Specification F2810. 6.2.1.5 Precision and Bias: (1) Precision—The precision of this test method has not been determined.6.2.2 Handlebars—The purpose of this test is to verify the existence of the handlebar. 6.2.2.1 Apparatus and Set Up—The sample shall be set up as described in 5.1. 6.2.2.2 Calibration—No calibration required. 6.2.2.3 Procedure—Visually verify the presence of a handlebar. 6.2.2.4 Pass/Fail Criteria—The handlebar must be present and conform to the requirements of subsection 5.2 of Specifi- cation F2810. 6.2.2.5 Precision and Bias—No information is presented about either the precision or bias ofthis test since the test result is non-quantitative. 6.2.3 Movable Handlebar Design—The purpose of this test is to evaluate the dimensions of the movable handlebars used on the sample. 6.2.3.1 Apparatus and Set Up—The sample shall be set up as described in 5.1. 6.2.3.2 Calibration—Verify that the measurement device is properly calibrated and has a resolution of 1 mm (0.04 in.). 6.2.3.3 Procedure—Measure the dimensions of the end portion of the movable handlebar. The evaluator shall also use the elliptical trainer per the manufacturer’s instructions and observe the orientation of the end portion of the movable handlebars with respect to the head ofthe evaluator throughout the range of travel of the movable handlebars. 6.2.3.4 Pass/Fail Criteria—The dimension of the end por- tion of the movable handlebar shall conform to dimensional requirements of subsection 5.2 of Specification F2810. Alternately, if the end portion of the movable handlebars is always angled away from the user during operation of the elliptical trainer then it shall be concluded that the movable handlebars meet the requirements of the specifications.6.3 Endurance—The purpose of this test is to confirm the endurance of the main components of the elliptical trainer. Load input to the elliptical trainer can be accomplished by securing weight to the foot pedals and lifting the weight using pneumatic cylinders, or by pushing down with pneumatic cylinders (with or without weight). Regardless of how the load is input to the elliptical trainer under test, careful consideration shall be given by the testing facility as to how the test apparatus is constructed. The testing facility shall communicate with the manufacturer prior to commencing the test and verify that the apparatus functions and loads the elliptical trainer in a manner similar to how a user would actually use and interface with the elliptical trainer. Figs. 1 and 2 illustrate pneumatic apparatuses that have been used successfully to conduct endurance testing. The elliptical trainer shown in Fig. 2 is driven by the two pneumatic cylinders which are attached to the footplates of the device under test.