ASTM D5528-D5528M-21 单向纤维增强聚合物基复合材料的I型层间断裂韧性的标准试验方法-北极星标准文库翻译中文版

VIP专免
venus 2025-10-17 364 1.02MB 14 页 24星币
侵权投诉
Designation: D5528/D5528M −21
Standard Test Method for
Mode I Interlaminar Fracture Toughness of Unidirectional
Fiber-Reinforced Polymer Matrix Composites
1
This standard is issued under the fixed designation D5528/D5528M; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This test method describes the determination of the
opening mode-I interlaminar fracture toughness, G
Ic
, of unidi-
rectional fiber-reinforced polymer matrix composite laminates
using the double cantilever beam (DCB) specimen (Fig. 1).
1.2 This test method is limited to use with composites
consisting of unidirectional carbon-fiber and glass-fiber-
reinforced laminates with brittle or tough single-phase polymer
matrices. This limited scope reflects the experience gained in
round-robin testing. This test method may prove useful for
other types and classes of composite materials; however,
certain interferences have been noted (see 6.6).
1.3 Units—The values stated in either SI units or inch-
pound units are to be regarded separately as standard. The
values stated in each system are not necessarily exact equiva-
lents; therefore, to ensure conformance with the standard, each
system shall be used independently of the other, and values
from the two systems shall not be combined.
1.3.1 Within the text, the inch-pound units are shown in
brackets.
1.4 This standard may involve hazardous materials,
operations, and equipment.
1.5 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 appro-
priate safety, health, and environmental practices and deter-
mine the applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accor-
dance with internationally recognized principles on standard-
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 ASTM Standards:
2
D792 Test Methods for Density and Specific Gravity (Rela-
tive Density) of Plastics by Displacement
D883 Terminology Relating to Plastics
D2584 Test Method for Ignition Loss of Cured Reinforced
Resins
D2651 Guide for Preparation of Metal Surfaces for Adhesive
Bonding
D2734 Test Methods for Void Content of Reinforced Plastics
D3171 Test Methods for Constituent Content of Composite
Materials
D3878 Terminology for Composite Materials
D5229/D5229M Test Method for Moisture Absorption Prop-
erties and Equilibrium Conditioning of Polymer Matrix
Composite Materials
D7905/D7905M Test Method for Determination of the
Mode II Interlaminar Fracture Toughness of Unidirec-
tional Fiber-Reinforced Polymer Matrix Composites
E4 Practices for Force Calibration and Verification of Test-
ing Machines
E6 Terminology Relating to Methods of Mechanical Testing
E122 Practice for Calculating Sample Size to Estimate, With
Specified Precision, the Average for a Characteristic of a
Lot or Process
E177 Practice for Use of the Terms Precision and Bias in
ASTM Test Methods
E456 Terminology Relating to Quality and Statistics
3. Terminology
3.1 Terminology D3878 defines terms relating to high-
modulus fibers and their composites. Terminology D883 de-
fines terms relating to plastics. Terminology E6 defines terms
relating to mechanical testing. Terminology E456 and Practice
E177 define terms relating to statistics. In the event of conflict
between terms, Terminology D3878 shall have precedence
over the other terminology standards.
1
This test method is under the jurisdiction of ASTM Committee D30 on
Composite Materials and is the direct responsibility of Subcommittee D30.06 on
Interlaminar Properties.
Current edition approved Nov. 15, 2021. Published January 2022. Originally
approved in 1994. Last previous edition approved in 2013 as D5528 – 13. DOI:
10.1520/D5528_D5528M-21.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
1
8QLYHUVLW\RI7RURQWR8QLYHUVLW\RI7RURQWRSXUVXDQWWR/LFHQVH$JUHHPHQW1RIXUWKHUUHSURGXFWLRQVDXWKRUL]HG
'RZQORDGHGSULQWHGE\
&RS\ULJKWE\$670,QWODOOULJKWVUHVHUYHG6DW-DQ*07
型号：D5528/D5528M −21
I型层间断裂韧性单向纤维增强聚合物基复合材料标准测试方
法1
本标准按固定代号D5528/D5528M发布；代号后面的数字表示原始采用年份，或修订时表示最后一次修订年份。括号中的数
字表示最后一次复审年份。上标的小写希腊字母ε（´）表示自上次修订或复审以来所做的编辑性更改。
1.范围
1.1本测试方法描述了使用双悬臂梁(DCB)样品（图
1）测定单向纤维增强聚合物基复合材料层压板的I型层间
断裂韧性GIc的方法。
1.2本测试方法仅限于用于由单向碳纤维和玻璃纤维
增强层压板组成的复合材料，其聚合物基体为脆性或韧性
单相聚合物。此有限范围反映了轮盘测试中获得的经验。
本测试方法可能对其他类型和类的复合材料有用；然而，
已注意到某些干扰（见6.6）。
1.3单位——以SI单位或英制单位表示的值应分别视
为标准。每个系统中表示的值不一定精确等效；因此，为
确保符合标准，每个系统应独立于其他系统使用，并且两
个系统的值不应组合。
1.3.1在文本中，英寸‑磅单位以括号显示。
1.4本标准要 涉及危险材料、
操作和设备。
1.5本标准不旨在解决其使用相关的所有安全问题
（如有）。使用本标准的责任在于使用者建立适当的安全、
健康和环境实践，并在使用前确定监管限制的适用性。
1.6本国际标准是根据世界贸易组织技术性贸易壁垒
（TBT）委员会发布的《关于制定国际标准、指南和建议
的原则的决定》中确立的国际公认标准化原则开发的。
2.参考文献文献
2.1ASTM标准:2
D792塑料密度和比重（相对密度）的浸没法测试方法
D883塑料术语
D2584固化增强树脂的燃失量测试方法
D2651粘合剂粘接金属表面准备指南
D2734增强塑料空洞含量测试方法D3171复合材料组
分含量测试方法
D3878复合材料术语
D5229/D5229M聚合物基复合材料吸湿性能和平衡调节测试方法
聚合物基复合材料层间断裂韧性测试方法
D7905/D7905M单向纤维增强聚合物基复合材料模式
II层间断裂韧性测定测试方法
E4测试设备力校准和验证实践
ingMachines
E6机械试验方法术语
E122计算、估计一批或过程某特性的平均值所需样本大小的实践方法
E177在ASTM试验方法中使用精确度和偏差术语的实践方法
E177在ASTM试验方法中使用精确度和偏差术语的实践方法
E456与质量和统计相关的术语
3.术语
3.1术语D3878定义了与高模量纤维及其复合材料相
关的术语。术语D883定义了与塑料相关的术语。术语
E6定义了与机械测试相关的术语。术语E456和实践
E177定义了与统计学相关的术语。如果术语之间存在冲
突，术语D3878应优先于其他术语标准。
1本测试方法由ASTM复合材料委员会D30管理，并直接由D30.06委
员会负责层间性能。当前版本于2021年11月15日批准。于2022年1月出
版。最初于1994年批准。最后一次先前版本于2013年作为D5528–13批
准。DOI:10.1520/D5528_D5528M‑21。
2有关引用的ASTM标准，请访问ASTM网站www.astm.org，或联系
ASTM客户服务service@astm.org。有关ASTM标准年度手册卷的信息，
请参阅ASTM网站上的标准文档摘要页面。
版权所有©ASTMInternational,100BarrHarborDrive,POBoxC700,WestConshohocken,PA19428‑2959。美国
本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议书原则的决定》中确立的国际公认标准化原则开发的。
1

NOTE 1—If the term represents a physical quantity, its analytical
dimensions are stated immediately following the term (or letter symbol) in
fundamental dimension form, using the following ASTM standard sym-
bology for fundamental dimensions, shown within square brackets: [M]
for mass, [L] for length, [T] for time, [u] for thermodynamic temperature,
and [nd] for non-dimensional quantities. Use of these symbols is restricted
to analytical dimensions when used with square brackets, as the symbols
may have other definitions when used without the brackets.
3.2 Definitions of Terms Specific to This Standard:
3.2.1 crack opening mode (mode I), n—fracture mode in
which the delamination faces open away from each other.
3.2.2 mode I interlaminar fracture toughness, G
Ic
[M/T
2
],
n—the critical value of strain energy release rate, G,[M/T
2
]for
delamination growth [L] as a result of an opening force
[M·L/T
2
] or opening displacement [L].
3.2.3 non-precracked (NPC) toughness [M/T
2
], n—an inter-
laminar fracture toughness value that is determined from the
preimplanted insert.
3.2.4 precracked (PC) toughness [M/T
2
], n—an interlami-
nar fracture toughness value that is determined after the
delamination has been previously advanced from the preim-
planted insert.
3.2.5 strain energy release rate, G [M/T
2
], n—the loss of
strain energy, dU [M·L
2
/T
2
], in the test specimen per unit of
specimen width [L] for an infinitesimal increase in delamina-
tion length, da [L], for a delamination growing self-similarly
under a constant displacement [L]; in mathematical form,
G521
b
dU
da (1)
where:
U= elastic strain energy in the specimen,
b= width of DCB specimen, and
a= delamination length.
3.3 Symbols:
A
1
—slope of plot of a/b versus (C/N)
1/3
.
a—delamination length: horizontal distance between load-
application point and delamination front (see Fig. 2).
a
0
—initial delamination length: horizontal distance between
load-application and end of preimplanted insert (see Fig. 2).
a
I
—i
th
delamination length measured during fracture testing.
b—width of DCB specimen.
C—compliance, δ/P, of DCB specimen.
C
i
—compliance of DCB specimen corresponding to the i
th
delamination length measured during fracture testing.
CV—sample coefficient of variation, in percent.
da—differential increase in delamination length.
dU—differential increase in elastic strain energy.
E
11
—lamina modulus of elasticity in the fiber direction.
e—total insert length (see Fig. 1).
F—large displacement correction factor.
G—strain energy release rate.
G
I
—mode I strain energy release rate.
G
Ic
—mode I interlaminar fracture toughness.
FIG. 1 Double Cantilever Beam Specimen
FIG. 2 Methods for Introducing Opening Load to DCB Specimen
D5528/D5528M − 21
2
8QLYHUVLW\RI7RURQWR8QLYHUVLW\RI7RURQWRSXUVXDQWWR/LFHQVH$JUHHPHQW1RIXUWKHUUHSURGXFWLRQVDXWKRUL]HG
'RZQORDGHGSULQWHGE\
&RS\ULJKWE\$670,QWODOOULJKWVUHVHUYHG6DW-DQ*07
NOTE 1—如果术语表示一个物理量，则其解析量纲在术语（或
字母符号）之后立即以基本量纲形式给出，使用以下ASTM标准基本
量纲符号，方括号内显示： [M]表示质量， [L]表示长度， [T]表示
时间， [u]表示热力学温度，以及 [nd]表示无量纲量。当与方括号
一起使用时，这些符号仅用于解析量纲，因为当不使用方括号时，
这些符号可能有其他定义。
3.2本标准特定术语的定义：
3.2.1裂纹张开模式（I型模式），n—层间分离的断裂模式。
3.2.2I型层间断裂韧性，GIc [M/T2],
n—应变能释放率G的临界值， [M/T2]，由于张开力[
M·L/T2]或张开位移 [L]导致层间分离增长 [L]。
3.2.3非预裂纹（NPC）韧性 [M/T2],
n—从预植入件
确定的层间断裂韧性值。
3.2.4预裂纹(PC)韧性 [M/T2], n—一种在分层已经从预植入件
中先前扩展后确定的层间断裂韧性值
分层已从植入物中预先进行。
3.2.5应变能释放率，G [M/T2], n—测试样品中每单
位样品宽度 [L]的应变能损失，dU [M·L2/T2]，对于分层
长度的微小增加，da [L], ，对于在恒定位移 [L]下自相
似增长的分层；在数学形式中，
G5 2 1
b
dU
da (1)
where:
U=样品中的弹性应变能，
b=DCB试样的宽度，和
a=分层长度。
3.3符号：
A1—a/b的斜率与(C/N)1/3的关系图。
a—脱粘长度：载荷施加点与脱粘前沿之间的水平距离（见图2）。
a0—初始脱粘长度：载荷施加点与预植入插入物末端之间的水平距
离（见图2）。
aI—ith 脱粘长度：在断裂测试期间测量的脱粘长度。
b—DCB试样的宽度。
C—合规性, δ/P,的DCB试样。
Ci—对应于断裂试验期间测量的ith分层长度的DCB试样合规性。
CV—样品变异系数，以百分比表示。
da—分层长度的差值增加。
dU—弹性应变能的差值增加。
E11—纤维方向上的层合板弹性模量。
e—总插入长度（见图1）。
F—大位移修正系数。
G—应变能释放率。
GI—模式I应变能释放率。
GIc—模式I层间断裂韧性。
图1双悬臂梁试样
图2将初始载荷引入DCB试样的方法
D5528/D5528M − 21
2

G
Ic
est
—estimated value of mode I fracture toughness.
h—thickness of DCB specimen.
L—length of DCB specimen.
L'—horizontal distance from the center of loading-block pin
hole to edge of the loading block.
m—slope of plot of log(C/N) versus log(a).
N—large displacement and loading block correction factor.
n—number of specimens tested.
P—applied load.
P
c
—critical force for mode I fracture.
P
max
—maximum applied force during DCB test.
P
5%
—applied force at which the specimen compliance has
increased by 5 %.
r
2
—correlation coefficient of linear fit of log(C/N) versus
log(a).
S
n-1
—sample standard deviation.
t—vertical distance from the center of the pin hole to the
midplane of the specimen arm.
U—elastic strain energy in the specimen.
V
f
—fiber volume fraction, in percent.
x¯—sample mean (average).
x
i
—measured or derived property.
δ—load point displacement.
δ
c
—critical load point displacement for mode I fracture.
δ
NL
—load point displacement containing the initial nonlin-
earity associated with fixture.
∆—effective delamination extension to correct for rotation
of DCB arms at delamination front.
∆
x
—incremental change in log(a).
∆
y
—incremental change in log(C/N).
4. Summary of Test Method
4.1 The DCB specimen shown in Fig. 1 consists of a
rectangular, uniform thickness, unidirectional laminated com-
posite specimen containing a preimplanted non-adhesive insert
on the midplane that serves as a delamination initiator. Open-
ing forces are applied to the DCB specimen by means of hinges
(Fig. 1a) or loading blocks (Fig. 1b) bonded to the delaminated
end of the specimen. The arms of the DCB specimen are
opened by controlling either the opening displacement or the
vertical crosshead movement, while the force and delamination
length are recorded.
4.2 A record of the applied force versus opening displace-
ment is recorded on an X-Y recorder, or equivalent real-time
plotting device or stored digitally and postprocessed. Instanta-
neous delamination front locations are marked on the chart at
intervals of delamination growth. The mode I interlaminar
fracture toughness, G
Ic
, is calculated using the compliance
calibration (CC) method. The test method provides a non-
precracked (NPC) value of G
Ic
calculated for delamination
growth initiating from the preimplanted insert, and a pre-
cracked (PC) value of G
Ic
calculated after the delamination has
been previously advanced from the preimplanted insert.
5. Significance and Use
5.1 Susceptibility to delamination is one of the major design
concerns for many advanced laminated composite structures.
Knowledge of a laminated composite material’s resistance to
interlaminar fracture is useful for product development and
material selection. Furthermore, a measurement of the mode I
interlaminar fracture toughness that is independent of specimen
geometry or method of force introduction is useful for estab-
lishing design allowables used in damage tolerance analyses of
composite structures. Knowledge of both the non-precracked
and precracked toughness allows the appropriate value to be
used for the application of interest.
5.2 This test method can serve the following purposes:
5.2.1 To establish quantitatively the effect of fiber surface
treatment, local variations in fiber volume fraction, and pro-
cessing and environmental variables on G
Ic
of a particular
composite material;
5.2.2 To compare quantitatively the relative values of G
Ic
for composite materials with different constituents;
5.2.3 To compare quantitatively the values of G
Ic
obtained
from different batches of a specific composite material, for
example, to use as a material screening criterion or to develop
a design allowable; and
5.2.4 To develop delamination failure criteria for composite
damage tolerance and durability analyses.
6. Interferences
6.1 Linear elastic behavior is assumed in the calculation of
Gused in this method. This assumption is valid when the zone
of damage or nonlinear deformation at the delamination front,
or both, is small relative to the smallest specimen dimension,
which is the thickness for the DCB specimen.
6.2 In the DCB test, as the delamination grows from the
insert, a resistance-type fracture behavior typically develops
where G
Ic
first increases monotonically, and then stabilizes
with further delamination growth. In this test method, a
resistance curve (R-curve) depicting G
Ic
as a function of
delamination length may be generated (Fig. 3). The R-curve
may be used to characterize propagation of a delamination in a
unidirectional specimen, or it can be used to normalize the
maximum cyclic G
I
values in mode I fatigue propagation tests
FIG. 3 Schematic of the Delamination Resistance Curve (R-curve)
for a Typical DCB Test
D5528/D5528M − 21
3
8QLYHUVLW\RI7RURQWR8QLYHUVLW\RI7RURQWRSXUVXDQWWR/LFHQVH$JUHHPHQW1RIXUWKHUUHSURGXFWLRQVDXWKRUL]HG
'RZQORDGHGSULQWHGE\
&RS\ULJKWE\$670,QWODOOULJKWVUHVHUYHG6DW-DQ*07
GIc
est—模式I断裂韧性的估计值。
h—DCB试样的厚度。
L—DCB试样的长度。
L'—加载块销钉中心到加载块边缘的水平距离。
孔到加载块边缘。
m—log(C/N)与log(a)关系图的斜率。
N—大位移和加载块修正系数。
n—测试试样的数量。
P—施加的载荷。
Pc—I型断裂的临界力。
Pmax—DCB测试期间施加的最大力。
P5%—试样合规性增加5%时的施加力。
r2—线性拟合log(C/N)与log(a)的相关系数
log(a).
Sn-1—样本标准偏差。
t—针孔中心到样品臂中平面的垂直距离。
U—样品中的弹性应变能。
Vf—纤维体积分数，以百分比表示。
x¯—样本均值（平均）。
xi—测量或派生属性。
δ—载荷点位移。
δc—I型断裂的临界载荷点位移。
δNL—包含与夹具相关的初始非线性的载荷点位移。
∆—有效脱粘扩展以校正脱粘前沿DCB臂的旋转。
∆x—对数(log(a))的增量变化。
∆y—对数(log(C/N))的增量变化。
4.测试方法总结
4.1图1所示的DCB试样由一个矩形、均匀厚度、单
向层压复合材料试样组成，其中在中间平面有一个预植入
的非粘合插入物，用作分层起始点。通过连接到试样分层
端的铰链（图1a）或加载块（图1b）对DCB试样施加开
合力。通过控制开合位移或垂直十字头运动来打开DCB试
样的臂，同时记录力和分层长度。
4.2应用力与开裂数据记录在X‑Y记录仪上，或等效
的实时绘图设备中，或以数字形式存储并进行后处理。分
层剥离开裂前沿位置以分层生长间隔在图表上标记。I型
层间断裂韧性, GIc，使用合规校准（CC）方法计算。该
测试方法提供从预植入插销处开始分层生长的非预裂纹
（NPC）值 GIc ，以及分层已从预植入插销处先前推进
后的预裂纹（PC）值 GIc 。
5.意义和应用
5.1对于许多先进层合复合材料结构，分层剥落倾向
是主要的设计关注点之一。了解层合复合材料材料的抗
层间断裂对产品开发和材料选择有用。此外，一种与试样
几何形状或施力方法无关的I型层间断裂韧性测量对于建
立用于复合材料结构损伤容限分析的许用值很有用。了解
非预裂纹和预裂纹韧性，允许为所需应用使用适当值。
5.2该测试方法可用于以下目的：
5.2.1为了定量地建立纤维表面处理、纤维体积分数的
局部变化以及工艺和环境变量对特定复合材料GIc 的影响；
5.2.2为了定量地比较具有不同组分的复合材料的 GIc的相对值；
5.2.3为了定量地比较从不同批次获得的特定复合材
料的GIc 的值，例如，用作材料筛选标准或开发设计允许
值；和
5.2.4为了开发复合材料的分层失效判据，用于损伤容限和耐久
性分析。
6.干扰
6.1计算中假设为线性弹性行为。
该方法中使用的G。当损伤区或分层前沿的非线性变形区，
或两者，相对于最小试样尺寸（对于DCB试样是厚度）
较小，此假设有效。
6.2在DCB测试中，当分层从插入件开始扩展时，电
阻型断裂行为通常会发展，其中 GIc 首先单调增加，然后
随着分层的进一步扩展而稳定。在这种测试方法中，可以
生成一个描绘 GIc 作为分层长度函数的电阻曲线（R曲线）
（图3）。R曲线可用于表征单向试样中分层的扩展，或用
于归一化I型疲劳扩展试验中的最大循环GI值
图3典型DCB试验的分层抗力曲线(R‑curve)示意图
D5528/D5528M − 21
3


标签： #标准试验 #增强 #纤维增强

摘要：

本页面提供ASTM D5528-D5528M-21标准的中文翻译版，该标准详细规定了单向纤维增强聚合物基复合材料I型层间断裂韧性的试验方法，适用于评估复合材料在分层模式下的抗开裂性能。内容涵盖试样制备、双悬臂梁（DCB）测试程序、数据采集与计算方法，以及结果报告要求。本站翻译版本由北极星标准文库专业整理，确保术语准确、逻辑清晰，便于国内科研人员与工程技术人员直接参考使用。通过本试验，可有效获取材料的临界应变能释放率（G_IC），对复合材料结构设计、质量控制和失效分析具有重要指导意义。

展开>> 收起<<
ASTM D5528-D5528M-21 单向纤维增强聚合物基复合材料的I型层间断裂韧性的标准试验方法-北极星标准文库翻译中文版.pdf

共14页,预览3页

还剩页未读， 继续阅读

声明：本文档系会员上传，若文档所含内容侵犯了您的版权或隐私，请立即通知，我们立即给予侵权申诉删除！

相关推荐

更多
立即下载
作者：venus 分类：专业资料 价格：24星币 属性：14 页 大小：1.02MB 格式：PDF 时间：2025-10-17

开通VIP享超值会员特权

  • 多端同步记录
  • 高速下载文档
  • 免费文档工具
  • 分享文档赚钱
  • 每日登录抽奖
  • 优质衍生服务

相关内容

更多

热门标签

ISO 混凝土 技术规范 检验 航空航天 不锈钢 消防 压力容器 铝合金 法兰
/ 14
评分 收藏
分享
立即下载 VIP免费下载
客服
关注