MIL-HDBK-17-2F Volume 2,Chapter 1 General Information The rows of the lamina summary table identify the type test and direction.The basic mechanical properties are included in each summary table.If data are available,additional properties are ap- pended in the following order: SB strength,31-plane Gle CTE 1-axis SB strength,23-plane GHe CTE 2-axis CTE 3-axis 8 For each test type and direction,the symbol for each class of data for the strength,modulus,Pois- son's ratio,and strain-to-failure is provided,in that order.The symbols are listed in Table 1.4.2(c) For example,if the entry under RTA and Tension,1-axis is Bl-S,there is room temperature ambi- ent data for longitudinal tension strength,modulus,and strain-to-failure.The dash indicates that there are no Poisson's ratio data.The strength data are B30(robust sampling),the modulus data are interim,and the strain-to-failure data are screening.Data classes are defined in Volume 1, Section 2.5.1,and summarized in Table 1.4.2(c).Certain test methods,for example,short beam strength,result only in screening data. 1-6
MIL-HDBK-17-2F Volume 2, Chapter 1 General Information 1-6 The rows of the lamina summary table identify the type test and direction. The basic mechanical properties are included in each summary table. If data are available, additional properties are appended in the following order: SB strength, 31-plane GIc CTE 1-axis SB strength, 23-plane GIIc CTE 2-axis CTE 3-axis ➑ For each test type and direction, the symbol for each class of data for the strength, modulus, Poisson's ratio, and strain-to-failure is provided, in that order. The symbols are listed in Table 1.4.2(c). For example, if the entry under RTA and Tension, 1-axis is BI-S, there is room temperature ambient data for longitudinal tension strength, modulus, and strain-to-failure. The dash indicates that there are no Poisson's ratio data. The strength data are B30 (robust sampling), the modulus data are interim, and the strain-to-failure data are screening. Data classes are defined in Volume 1, Section 2.5.1, and summarized in Table 1.4.2(c). Certain test methods, for example, short beam strength, result only in screening data
MIL-HDBK-17-2F Volume 2,Chapter 1 General Information TABLE 1.4.2(a)Summary table format,first page. MATERIAL: (Fiber)(Filament-Count)/(Matrix)(Weave pattem) 2 {Tape/Fabric) FORM: [input depends on type of preconsolidation form and processing) FIBER: (Manufacturer)(Commercial Name) MATRIX: {Manufacturer){Commercial Name} (Filament Count)(Sizing)(Twist) PROCESSING: (Reinforcement Application).(Mold Type)(Type of Processing Step):(Temperature).(Duration). (Pressure}③ Tg(dry): XXXF Tg(wet): XXXF Tg METHOD: (Method)④ *(Waming) 5 Date of fiber manufacture MM/YY Date of testing MM/YY Date of resin manufacture MM/YY Date of data submittal MM/YY Date of prepreg manufacture MM/YY Date of analysis MM/YY Date of composite manufacture MM/YY 6 LAMINA PROPERTY SUMMARY (RTA) (Ambient/dry,coldest to hottest) (Wet,coldest to hottest) Tension,1-axis Tension,2-axis Tension,3-axis Compression,1-axis Compression,2-axis The data class is noted Compression,3-axis for each type test/direction/ Shear,12-plane environmental-condition combination Shear,23-plane Shear,31-plane (Additional type test/direction) Classes of data in Strength/Modulus/Poisson's Ratio/Strain-to-Failure order:3 A=A75,a A55,B=B30,b=B18,M=Mean,I =Interim,s=Screening,-=no data (See Table 1.4.2(c)). 1-7
MIL-HDBK-17-2F Volume 2, Chapter 1 General Information 1-7 TABLE 1.4.2(a) Summary table format, first page. MATERIAL: {Fiber} {Filament-Count}/{Matrix} {Weave pattern} {Tape/Fabric} ➋ ➊ FORM: {input depends on type of preconsolidation form and processing} FIBER: {Manufacturer} {Commercial Name} {Filament Count} {Sizing} {Twist} MATRIX: {Manufacturer} {Commercial Name} PROCESSING: {Reinforcement Application}, {Mold Type} {Type of Processing Step}: {Temperature}, {Duration}, {Pressure} ➌ Tg(dry): XXX°F Tg(wet): XXX°F Tg METHOD: {Method} ➍ *{Warning} ➎ Date of fiber manufacture MM/YY Date of testing MM/YY Date of resin manufacture MM/YY Date of data submittal MM/YY Date of prepreg manufacture MM/YY Date of analysis MM/YY Date of composite manufacture MM/YY ➏ LAMINA PROPERTY SUMMARY ➐ {RTA} {Ambient/dry, coldest to hottest} {Wet, coldest to hottest} Tension, 1-axis Tension, 2-axis Tension, 3-axis Compression, 1-axis Compression, 2-axis The data class is noted Compression, 3-axis for each type test/direction/ Shear, 12-plane environmental-condition combination Shear, 23-plane Shear, 31-plane {Additional type test/direction} Classes of data in Strength/Modulus/Poisson's Ratio/Strain-to-Failure order: ➑ A = A75, a = A55, B = B30, b = B18, M = Mean, I =Interim, S = Screening, - = no data (See Table 1.4.2(c))
MIL-HDBK-17-2F Volume 2,Chapter 1 General Information TABLE 1.4.2(b)Composite reinforcement application,cure process type,and processing step descriptions. Reinforcement Application Cure Process Type Type of Processing Step Process automated fiber placement- compression molding age-harden tape diffusion bonding anneal automated fiber placement- injection molding consolidate [pre-cure] towpreg injection molding-vacuum assisted cooldown automated fiber placement- injection molding-reaction cure bleed wet injection molding-liquid cure-no bleed automated lay-up-prepreg oven debulk automated lay-up-wet autoclave densify hand lay-up-prepreg hydroclave injection hand lay-up-wet trapped rubber isothermal dwell preform-braid pultrusion part insertion preform-weave resin transfer molding part removal spray VARTM [vacuum-assisted resin postcure wound -dry transfer molding] preform insertion wound -wet vacuum infiltration preheat wound-prepreg vapor deposition e-beam induction TABLE 1.4.2(c)MIL-HDBK-17 data classes and minimum sampling requirements. Minimum Requirements Designation Symbol Description Number of Number of Batches Specimens A75 A A-basis- Robust Sampling 10 75 A55 A-basis- a 5 55 Reduced Sampling B30 B-Basis- 30 Robust Sampling B18 B-Basis- b 3 18 Reduced Sampling M M Mean 3 18 Interim 3 15 s s Screening 5 1-8
MIL-HDBK-17-2F Volume 2, Chapter 1 General Information 1-8 TABLE 1.4.2(b) Composite reinforcement application, cure process type, and processing step descriptions. Reinforcement Application Process Cure Process Type Type of Processing Step automated fiber placement - tape automated fiber placement - towpreg automated fiber placement - wet automated lay-up - prepreg automated lay-up - wet hand lay-up - prepreg hand lay-up - wet preform - braid preform - weave spray wound - dry wound - wet wound - prepreg compression molding diffusion bonding injection molding injection molding - vacuum assisted injection molding - reaction injection molding - liquid oven autoclave hydroclave trapped rubber pultrusion resin transfer molding VARTM [vacuum-assisted resin transfer molding] vacuum infiltration vapor deposition e-beam induction age-harden anneal consolidate [pre-cure] cooldown cure - bleed cure - no bleed debulk densify injection isothermal dwell part insertion part removal postcure preform insertion preheat TABLE 1.4.2(c) MIL-HDBK-17 data classes and minimum sampling requirements. Minimum Requirements Designation Symbol Description Number of Batches Number of Specimens A75 A A-basis – Robust Sampling 10 75 A55 a A-basis – Reduced Sampling 5 55 B30 B B-Basis – Robust Sampling 5 30 B18 b B-Basis – Reduced Sampling 3 18 M M Mean 3 18 I I Interim 3 15 S S Screening 1 5
MIL-HDBK-17-2F Volume 2,Chapter 1 General Information Continuing on the second page of summary information(Table 1.4.2(d)): ① Any warning is placed at the top of this page. ② The box at the top of the second page of summary information presents basic physical parameters for the data set.The first data column contains nominal values,typically specification information. This information may not match information directly applicable to this data set.For example,the nominal fiber volume according to the prepreg manufacturer may be one value,while the data are normalized to a different value based on Volume 1,Section 2.5.7,to provide consistency within the handbook.One or more of the nominal values can be calculated from other information if the values are not otherwise available.For example,if unavailable the nominal composite density will be calculated from nominal fiber density,matrix density,and fiber volume.In this case,a note de- scribes the calculation.If the nominal fiber volume was not supplied by the data source,it was calculated based on resin content,fiber density and composite density,assuming void content is 0%. ③ The second data column presents the range of values for the data set submitted.These data may not correlate directly with each other.For example,fiber volume and fiber areal weight may be batch average measurements,while the cured ply thickness values are generally based on indi- vidual specimen measurements ④ The last column presents the test method used to obtain these data.This information was not in- cluded in the early versions of data documentation requirements. ⑤ Laminate property data are summarized in the lower box in the same way as lamina property data are summarized on the previous page.Families of laminates are provided with properties listed below each laminate family.A laminate family is identified by square brackets surrounding a list of the ply orientations separated by commas.More specific lay-up information is included in the laminate summary table only if needed to differentiate among lay-ups.Specific lay-up information is provided in the detailed tables that follow.The type test and direction are included only if data are available and are based on Table 1.4.2(e). Unless otherwise noted,the x-axis corresponds to the +0-direction of the laminate lay-up.Data included for this material are indicated by the data class symbol,identified in the footnote. 1-9
MIL-HDBK-17-2F Volume 2, Chapter 1 General Information 1-9 Continuing on the second page of summary information (Table 1.4.2(d)): ➀ Any warning is placed at the top of this page. ➁ The box at the top of the second page of summary information presents basic physical parameters for the data set. The first data column contains nominal values, typically specification information. This information may not match information directly applicable to this data set. For example, the nominal fiber volume according to the prepreg manufacturer may be one value, while the data are normalized to a different value based on Volume 1, Section 2.5.7, to provide consistency within the handbook. One or more of the nominal values can be calculated from other information if the values are not otherwise available. For example, if unavailable the nominal composite density will be calculated from nominal fiber density, matrix density, and fiber volume. In this case, a note describes the calculation. If the nominal fiber volume was not supplied by the data source, it was calculated based on resin content, fiber density and composite density, assuming void content is 0%. ➂ The second data column presents the range of values for the data set submitted. These data may not correlate directly with each other. For example, fiber volume and fiber areal weight may be batch average measurements, while the cured ply thickness values are generally based on individual specimen measurements. ➃ The last column presents the test method used to obtain these data. This information was not included in the early versions of data documentation requirements. ➄ Laminate property data are summarized in the lower box in the same way as lamina property data are summarized on the previous page. Families of laminates are provided with properties listed below each laminate family. A laminate family is identified by square brackets surrounding a list of the ply orientations separated by commas. More specific lay-up information is included in the laminate summary table only if needed to differentiate among lay-ups. Specific lay-up information is provided in the detailed tables that follow. The type test and direction are included only if data are available and are based on Table 1.4.2(e). Unless otherwise noted, the x-axis corresponds to the +0-direction of the laminate lay-up. Data included for this material are indicated by the data class symbol, identified in the footnote
MIL-HDBK-17-2F Volume 2,Chapter 1 General Information TABLE 1.4.2(d)Summary table format,second page. (Waming) ① Nominal② As Submitted③ Test Method④ Fiber Density (g/cm3) X.XX {Minimum)-(Maximum) (Method) Resin Density (g/cm X.XX (Minimum)-(Maximum) (Method) Composite Density (g/cm3) X.XX (Minimum)-(Maximum) (Method} Fiber Areal Weight (g1m3 XXX {Minimum)-(Maximum) (Method) Fiber Volume (%) XX (Minimum)-(Maximum) (Method) Ply Thickness (in) 0.0XXX (Minimum)-(Maximum) (Method) LAMINATE PROPERTY SUMMARY 5 (RTA) (Ambient/dry,coldest to hottest) fWet,coldest to hottest) Laminate Family) [Type test/direction) The data class is noted (Laminate Family) for each type test/direction/ (Type test/direction) environmental-condition combination Classes of data in Strength/Modulus/Poisson's ratio/Strain-to-failure order A=A75,a A55,B=B30,b B18,M=Mean,I =Interim,s Screening.-=no data (See Table 1.4.2(c)). 1-10
MIL-HDBK-17-2F Volume 2, Chapter 1 General Information 1-10 TABLE 1.4.2(d) Summary table format, second page. {Warning} ➀ Nominal ➁ As Submitted ➂ Test Method ➃ Fiber Density (g/cm3 ) X.XX {Minimum} - {Maximum} {Method} Resin Density (g/cm3 ) X.XX {Minimum} - {Maximum} {Method} Composite Density (g/cm3 ) X.XX {Minimum} - {Maximum} {Method} Fiber Areal Weight (g/m2 ) XXX {Minimum} - {Maximum} {Method} Fiber Volume (%) XX {Minimum} - {Maximum} {Method} Ply Thickness (in) 0.0XXX {Minimum} - {Maximum} {Method} LAMINATE PROPERTY SUMMARY ➄ {RTA} {Ambient/dry, coldest to hottest} {Wet, coldest to hottest} {Laminate Family} {Type test/direction} . . . The data class is noted {Laminate Family} for each type test/direction/ {Type test/direction} environmental-condition combination . . . Classes of data in Strength/Modulus/Poisson’s ratio/Strain-to-failure order A = A75, a = A55, B = B30, b = B18, M = Mean, I =Interim, S = Screening, - = no data (See Table 1.4.2(c))