{"id":9211,"date":"2024-10-16T19:56:00","date_gmt":"2024-10-16T19:56:00","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/astm-f1650\/"},"modified":"2024-10-24T11:10:00","modified_gmt":"2024-10-24T11:10:00","slug":"astm-f1650","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/astm\/astm-f1650\/","title":{"rendered":"ASTM-F1650"},"content":{"rendered":"

ASTM F1650-98-Reapproved2005<\/h3>\n

Historical Standard: Standard Practice for Evaluating Tire Traction Performance Data Under Varying Test Conditions<\/h4>\n
\n

ASTM F1650<\/h4>\n

Scope<\/strong><\/p>\n

1.1 This practice covers the required procedures for examining sequential control tire data for any variation due to changing test conditions. Such variations may influence absolute and also comparative performance of candidate tires, as they are tested over any short or extended time period. The variations addressed in this practice are systematic or bias variations and not random variations. See for additional details.<\/p>\n

1.1.1 Two types of variation may occur: time or test sequence “trend variations,” either linear or curvilinear, and the less common transient or abrupt shift variations. If any observed variations are declared to be statistically significant, the calculation procedures are given to correct for the influence of these variations. This approach is addressed in Method A.<\/p>\n

1.2 In some testing programs, a policy is adopted to correct all candidate traction test data values without the application of a statistical routine to determine if a significant trend or shift is observed. This option is part of this practice and is addressed in Method B.<\/p>\n

1.3 The issue of rejecting outlier data points or test values that might occur among a set of otherwise acceptable data values obtained under identical test conditions in a short time period is not part of this practice. Specific test method or other outlier rejection standards that address this issue may be used on the individual data sets prior to applying this practice and its procedures.<\/p>\n

1.4 Although this practice applies to various types of tire traction testing (for example, dry, wet, snow, ice), the procedures as given in this practice may be used for any repetitive tire testing in an environment where test conditions are subject to change.<\/p>\n

This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.<\/p>\n

Keywords<\/strong><\/p>\n

data correction; test variation; testing trends; traction testing<\/p>\n

ICS Code<\/strong><\/p>\n

ICS Number Code 83.160.10 (Road vehicle tyres)<\/p>\n

DOI:<\/strong> 10.1520\/F1650-98R05<\/p>\n<\/div>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nScope
Referenced Documents <\/td>\n<\/tr>\n
2<\/td>\nTerminology
Significance and Use
Summary of Practice <\/td>\n<\/tr>\n
3<\/td>\nSummary of Method A
Procedure
Calculations for Corrected Traction Performance Data
TABLE 1 <\/td>\n<\/tr>\n
4<\/td>\nTABLE 2 <\/td>\n<\/tr>\n
5<\/td>\nSummary of Method B
Calculations for Relative or Comparative Performance Evaluation <\/td>\n<\/tr>\n
6<\/td>\nCiting This Practice
Keywords
A1. TYPICAL VARIATIONS OF CONTROL TIRE DATA AND AN EXAMPLE OF CORRECTION CALCULATIONS FOR CANDIDATE SET WET TRACTION EVALUATION
A1.1
A1.2 <\/td>\n<\/tr>\n
7<\/td>\nFIG. A1.1
FIG. A1.2
FIG. A1.3
FIG. A1.4 <\/td>\n<\/tr>\n
8<\/td>\nFIG. A1.5
TABLE A1.1
TABLE A1.2 <\/td>\n<\/tr>\n
9<\/td>\nA2. RECOMMENDED WEIGHTING PROCEDURE FOR CORRECTION FACTORS
A2.1
A2.2
A2.3
TABLE A1.3
TABLE A2.1
TABLE A2.2
TABLE A2.3 <\/td>\n<\/tr>\n
10<\/td>\nX1. STATISTICAL MODEL FOR TRACTION MEASUREMENT
X1.1 General Model Development and Background
X1.2 Application of Model to Variation in Pavement (Other) Conditions
X2. PROPAGATION OF ERROR (VARIATION) IN TIRE TRACTION PERFORMANCE EVALUATION
X2.1 Background <\/td>\n<\/tr>\n
11<\/td>\nX2.2 Basis for Calculating the Variance of TPI
X2.3 Variance for TPI: Case 1\u2014No Trend\/Shift Corrections
TABLE X2.1 <\/td>\n<\/tr>\n
12<\/td>\nX2.4 Variance for TPI: Case 2\u2014Trend Corrections
X2.5 Comparing the Variation of TPI\u2014No Correction Versus Correction
TABLE X2.2 <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

F1650-98(2005) Standard Practice for Evaluating Tire Traction Performance Data Under Varying Test Conditions<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
ASTM<\/b><\/a><\/td>\n2005<\/td>\n13<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":9212,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1192,2637],"product_tag":[],"class_list":{"0":"post-9211","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-83-160-10","7":"product_cat-astm","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/9211","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/9212"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=9211"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=9211"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=9211"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}